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Build the Perfect Saltwater Aquarium for Fish, Corals & Reef Life.

Compare the best reef tank equipment, plan coral systems, and design a marine setup that thrives — guided by reef-keeping experts.

180+Reef builds documented
40kReefers in our community
12Tank archetypes covered
Reef Match Quiz

Find your perfect reef build in under 90 seconds

Answer 9 quick questions — we’ll match you to one of 12 reef archetypes with the gear, livestock, and care plan to match.

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Reef-keeping involves living animals — please research thoroughly before purchasing livestock or equipment. How we match

Tank Type Explorer

Find the reef build that fits your space, budget & ambition

Twelve reef archetypes — from desk nanos to luxury display systems — with the equipment, livestock, and care guidance for each.

Most Popular 10–30 gallons

Nano Reef Tank

Compact reef ecosystems under 30 gallons

Filtration
AIO chambered with chemical media + nano protein skimmer
Corals
Soft corals, zoas, mushrooms, beginner LPS
Fish stocking
2–4 small reef-safe fish (clownfish, gobies, cardinals)
Lighting
AI Prime 16HD or Kessil A80 (60–100 PAR)
Flow
20–40× turnover, single nano powerhead
Difficulty
Intermediate — small water volume amplifies parameter swings
Nutrients
Weekly 10% water changes + careful feeding (1× daily)
Aquascape
Single open structure, leave 60% sand bed visible
Equipment checklist
  • Nano AIO tank
  • Nano protein skimmer
  • Nano LED
  • Heater 50W
  • Refractometer
  • Salt mix
Best for Beginners 40–55 gallons

Beginner Saltwater Tank

A forgiving first marine system with hardy livestock

Filtration
Hang-on-back protein skimmer + canister or sump
Corals
Optional — soft corals only at start
Fish stocking
Hardy beginners: clownfish, damsels, blennies, firefish
Lighting
Mid-range LED 80–120 PAR if corals planned
Flow
15–25× turnover, two small powerheads
Difficulty
Beginner — larger water volume = stable parameters
Nutrients
Bi-weekly 15% water changes, light feeding
Aquascape
Two-island layout, generous swimming space
Equipment checklist
  • 40g rimless tank
  • HOB skimmer
  • LED light
  • Heater 100W
  • Powerheads
  • Test kit
Editor Favorite 60–120 gallons

Mixed Reef Aquarium

The classic display — soft, LPS, and beginner SPS together

Filtration
External sump + protein skimmer + carbon/GFO reactor
Corals
Soft + LPS + select beginner SPS (Montipora, Birdsnest)
Fish stocking
8–14 reef-safe fish across multiple swim zones
Lighting
Hybrid T5 + LED, or premium LED (Radion XR15/XR30)
Flow
30–50× turnover with gyre or wavemakers
Difficulty
Intermediate–Advanced
Nutrients
Weekly 10% changes + 2-part dosing for alk/cal/mag
Aquascape
Asymmetric structure with overhangs for LPS shading
Equipment checklist
  • 75g reef-ready tank
  • Sump w/ skimmer
  • Premium LED
  • Return pump
  • Wavemakers
  • ATO
Show Reef 90–300 gallons

SPS Coral Reef

High-flow, ultra-low-nutrient SPS dominant systems

Filtration
Oversized sump + premium skimmer + biopellets/carbon dosing
Corals
Acropora, Montipora, Stylophora, Seriatopora
Fish stocking
Lean stocking — anthias, wrasses, tangs (size dependent)
Lighting
High-PAR LED + T5 hybrid (300–450 PAR at top)
Flow
50–80× turnover, multiple gyres + wavemakers
Difficulty
Advanced — demands stable chemistry and discipline
Nutrients
Ultra-low NO3 (1–5 ppm), PO4 (0.02–0.06 ppm)
Aquascape
Open SPS branches with ample flow channels
Equipment checklist
  • 120g+ rimless tank
  • Premium skimmer
  • Hybrid lighting
  • Return + 4 pumps
  • Calcium reactor
  • KH controller
Color Showcase 40–120 gallons

LPS Reef Tank

Showpiece LPS gardens with rich color and movement

Filtration
Sump with moderate skimming + biological media
Corals
Acanthastrea, Euphyllia (torch/hammer/frogspawn), Acan, Chalice
Fish stocking
Reef-safe community: clowns, fairy wrasses, royal gramma
Lighting
Moderate-PAR LED (100–200), full spectrum
Flow
20–35× turnover, gentle indirect flow
Difficulty
Intermediate
Nutrients
NO3 5–15 ppm, PO4 0.03–0.1 ppm — slightly enriched
Aquascape
Stepped shelves with placement zones for sweepers
Equipment checklist
  • 60g reef tank
  • Mid-tier skimmer
  • LED
  • Wavemaker
  • Refractometer
  • Coral feeder
Easy Reef 20–75 gallons

Soft Coral Aquarium

Lush, swaying soft-coral garden with low maintenance

Filtration
Standard skimmer + light chemical filtration
Corals
Zoas, mushrooms, leathers, xenia, Kenya tree, GSP
Fish stocking
Forgiving community fish, clownfish pairs
Lighting
Lower-PAR LED (60–120 PAR) — softies prefer subdued
Flow
15–25× turnover, low and indirect
Difficulty
Beginner-friendly
Nutrients
Tolerant of NO3 10–25 ppm, PO4 0.05–0.15 ppm
Aquascape
Mounded rockwork with leather coral focal point
Equipment checklist
  • 40g tank
  • HOB skimmer
  • Mid LED
  • Heater
  • Powerhead
  • Salt mix
Predator Display 75–300 gallons

Fish-Only Marine Tank

A predator or community marine display without corals

Filtration
Heavy skimming + canister or sump + UV sterilizer
Corals
None — fish-only with live rock (FOWLR) or pure FO
Fish stocking
Larger angels, triggers, puffers, lionfish, eels
Lighting
Basic LED — color rendering only, no PAR target
Flow
10–20× turnover sufficient
Difficulty
Intermediate — larger fish need oversized filtration
Nutrients
NO3 up to 30 ppm acceptable, weekly water changes
Aquascape
Large open swimming space with cave structures
Equipment checklist
  • 125g tank
  • Oversized skimmer
  • UV sterilizer
  • Sump
  • Powerful return
  • Larger heater
Showpiece 180–500+ gallons

Large Display Reef

A statement reef of 200+ gallons

Filtration
Custom sump system, multiple reactors, full automation
Corals
Mixed garden with specimen SPS colonies
Fish stocking
20+ fish across multiple zones, schooling species
Lighting
Multiple LED + T5 hybrid arrays
Flow
40–60× via dual gyres + return manifold
Difficulty
Advanced — major investment in equipment + automation
Nutrients
Controller-managed dosing, monitored 24/7
Aquascape
Multi-island design with deep swim channels
Equipment checklist
  • 250g+ rimless tank
  • Custom sump
  • Apex controller
  • Doser
  • CaRx
  • RO/DI 150 GPD
Architectural 70–200 gallons

Peninsula Reef Tank

Three-sided viewing for room dividers and open layouts

Filtration
External sump in adjacent room or stand
Corals
LPS-forward to highlight color from multiple angles
Fish stocking
Active swimmers — wrasses, anthias, tangs
Lighting
Suspended LED with no overflow on display side
Flow
30–50× via concealed wavemakers
Difficulty
Intermediate–Advanced
Nutrients
Standard reef parameters
Aquascape
Center-island scape viewable from three sides
Equipment checklist
  • Peninsula tank
  • External sump
  • Suspended LED
  • Concealed flow
  • ATO
Desk Reef 8–20 gallons

Office Nano Reef

Quiet, plug-and-play AIO for desks and workspaces

Filtration
AIO with stock pump + small skimmer
Corals
Zoas, mushrooms, ricordea, single LPS centerpiece
Fish stocking
1–2 nano fish (clown goby, neon goby)
Lighting
Single nano LED with dim ramps
Flow
Stock return pump + nano powerhead
Difficulty
Intermediate (small volume)
Nutrients
5% weekly water changes, minimal feeding
Aquascape
Single rock arch, generous open sand
Equipment checklist
  • 10g AIO
  • Nano LED
  • Heater 25W
  • ATO mini
  • Salt mix
Best Value 40–55 gallons

Budget Reef Setup

Quality reef under $1,000 total

Filtration
Used sump or HOB skimmer + DIY rock
Corals
Soft corals + zoas (most affordable)
Fish stocking
4–6 hardy beginner reef fish
Lighting
Budget LED (NICREW, AI Prime entry, or used Kessil)
Flow
Two budget powerheads
Difficulty
Beginner
Nutrients
Manual dosing, weekly water changes
Aquascape
DIY dry rock with mortar
Equipment checklist
  • 40g breeder
  • HOB skimmer
  • Budget LED
  • Heater
  • Powerheads
  • Dry rock
Premium 150–400+ gallons

Luxury Reef System

Premium showpiece reef with full automation

Filtration
Reef Octopus / Bubble King + Apex full automation
Corals
Designer SPS, rare LPS specimens, gold torch
Fish stocking
Premium specimens — Gem tang, conspic angel, harlequin
Lighting
Multiple Radion XR30 G6 + ATI hybrid
Flow
Maxspect Gyre + EcoTech MP series
Difficulty
Advanced
Nutrients
Triton method or Continuum / GHL doser system
Aquascape
Custom Real Reef or Marco rock sculpted scape
Equipment checklist
  • 250g rimless
  • Bubble King skimmer
  • Apex Pro
  • GHL doser
  • CaRx
  • IceCap 4K return
Aquarium Size Calculator

Match the right reef tank to your space, budget & goals

No guesswork. Plug in your room, budget, and ambitions — get the recommended tank size, filtration, lighting, and equipment list.

Coral Compatibility Visualizer

Place corals in your tank — see compatibility before you buy

Drag corals onto the reef. We highlight aggression zones, lighting needs, and flow requirements in real time.

Reef Equipment Planner

Build a complete equipment list — instantly

Pick your tank size and reef ambition. We assemble a curated equipment package with Amazon picks for each component.

Water Parameter Tracker

Log every reading. Catch problems before livestock notice.

Track salinity, pH, alkalinity, calcium, magnesium, nitrate, phosphate & temperature. Saved locally — no account required.

History

DateSgpHdKHCaMgNO₃PO₄°F
Reef Livestock Database

Reef-safe fish, corals, invertebrates & cleanup crew

Search by name, filter by category, and check care level, aggression, and minimum tank size at a glance.

Ocellaris Clownfish

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
20 gal

Feeding: Mixed marine flake / pellet, frozen mysis

The classic beginner reef fish. Pairs bond for life.

Royal Gramma

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
30 gal

Feeding: Mysis, brine, marine pellet

Striking purple/yellow fish that hides in caves.

Firefish Goby

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
20 gal

Feeding: Small frozen foods, copepods

Hovers mid-water, jumps — keep covered.

Yellow Tang

Moderate
Reef-safe
Yes
Aggression
Semi
Min tank
100 gal

Feeding: Nori sheets, marine algae diet

Needs swimming space and grazing surface.

Six-Line Wrasse

Easy
Reef-safe
Yes
Aggression
Semi
Min tank
30 gal

Feeding: Frozen mysis, pellets, hunts pyramid snails

Great for pest control but can become bossy.

Mandarin Dragonet

Advanced
Reef-safe
Yes
Aggression
Peaceful
Min tank
75 gal

Feeding: Live copepods (essential)

Requires established refugium with copepod population.

Lyretail Anthias

Moderate
Reef-safe
Yes
Aggression
Peaceful
Min tank
75 gal

Feeding: Multiple small feedings daily

Best in groups of 3–7 with one male.

Banggai Cardinalfish

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
30 gal

Feeding: Frozen mysis, pellets

Captive-bred preferred — hovers gracefully.

Midas Blenny

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
30 gal

Feeding: Algae-based marine flakes

Active personality with golden coloration.

Cleaner Wrasse

Advanced
Reef-safe
Yes
Aggression
Peaceful
Min tank
90 gal

Feeding: Specialized — not recommended for home aquaria

Better left in the wild — high mortality.

Green Star Polyps

Easy
Reef-safe
Yes
Aggression
Spreader
Min tank
10 gal

Feeding: Photosynthetic, occasional feeding

Beautiful soft coral but spreads aggressively — isolate.

Zoanthid Polyps

Easy
Reef-safe
Yes
Aggression
Mild
Min tank
10 gal

Feeding: Reef Roids, light feeding

Endless color morphs, beginner soft coral.

Hammer Coral (Euphyllia)

Easy
Reef-safe
Yes
Aggression
Sweeper
Min tank
30 gal

Feeding: Mysis, pellets, Reef Roids

Has long sweeper tentacles — give 6+ inch buffer.

Torch Coral

Moderate
Reef-safe
Yes
Aggression
Sweeper
Min tank
30 gal

Feeding: Targeted reef food

Stunning movement — keep apart from other Euphyllia families.

Acanthastrea (Acan)

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
20 gal

Feeding: Mysis, oyster feast — direct feed

Color-rich LPS that responds to feeding.

Acropora millepora

Advanced
Reef-safe
Yes
Aggression
Peaceful
Min tank
60 gal

Feeding: Photosynthetic, amino acids

Demanding SPS — needs stable parameters and high flow.

Montipora Capricornis

Moderate
Reef-safe
Yes
Aggression
Peaceful
Min tank
30 gal

Feeding: Photosynthetic, light feeding

Plate-form SPS suitable for beginners.

Bubble-Tip Anemone

Moderate
Reef-safe
Caution
Aggression
Mobile
Min tank
30 gal

Feeding: Silversides, mysis, weekly feeding

Hosts clownfish — but can roam and sting corals.

Turbo Snail

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
20 gal

Feeding: Algae grazer

Workhorse for film and hair algae.

Nassarius Snail

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
10 gal

Feeding: Detritivore — sand stirrer

Burrows in sand and emerges to eat leftovers.

Cerith Snail

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
10 gal

Feeding: Algae + detritus

Dual-purpose — works sand and rock.

Blue-Leg Hermit Crab

Easy
Reef-safe
Caution
Aggression
Mild
Min tank
20 gal

Feeding: Detritivore + algae

Provide spare shells to prevent snail killing.

Peppermint Shrimp

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
20 gal

Feeding: Eats Aiptasia + scavenges

Best natural Aiptasia control.

Skunk Cleaner Shrimp

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
30 gal

Feeding: Mysis, scavenges parasites off fish

Pairs reduce fish parasite load.

Emerald Crab

Easy
Reef-safe
Caution
Aggression
Mild
Min tank
30 gal

Feeding: Bubble algae specialist

Good against bubble algae but can pick at corals if hungry.

Tuxedo Urchin

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
30 gal

Feeding: Coralline algae grazer

Wears decor pieces — charming personality.

Serpent Starfish

Easy
Reef-safe
Yes
Aggression
Peaceful
Min tank
30 gal

Feeding: Detritivore, scavenger

Avoid green brittle stars — they hunt fish.

Aquascape Planner

Sketch your reef rockwork before you buy a single rock

Drag rocks, plan flow channels, and visualize coral spacing — designed to keep your scape both beautiful and functional.

Tip: leave 60% sand-bed visible for an open, modern reefscape. Avoid placing rock against the back glass — algae loves dark corners.

Open full Aquascape Planner →
Side-by-Side

Compare reef equipment in seconds

Editor-curated comparisons across the gear that actually moves the needle for reef health and growth.

Skimmer Best For Tank Size Coral Support Flow Rating Noise Reef Compatible Editor Score Buy
Reef Octopus 110-INT Best Pick Mixed reef Up to 120 gal SPS / LPS / Soft High Quiet 4.9 Amazon
Bubble Magus Curve 5 Budget mixed reef Up to 75 gal LPS / Soft Medium Moderate 4.5 Amazon
Royal Exclusiv Bubble King 200 SPS dominant Up to 250 gal SPS / LPS / Soft High Whisper 5.0 Amazon
AquaC Remora HOB Hang-on-back nano Up to 75 gal Soft / LPS Medium Moderate 4.3 Amazon
Reef LightCoverageCoral SupportPAR @24"SpectrumWirelessReef ScoreBuy
EcoTech Radion XR15 G6 Pro Best Pick24" cubeSPS / LPS / Soft~250Tunable 7-CH5.0Amazon
AI Hydra 32HD36"SPS / LPS / Soft~2007-CH4.8Amazon
Kessil A360X Tuna Blue24"–36"SPS / LPS~2202-CH tunable4.9Amazon
AI Prime 16HD24"Soft / LPS~1207-CH4.7Amazon
WavemakerTank SizeMax GPHModesWireless SyncBattery BackupReef ScoreBuy
EcoTech VorTech MP40 QD Best Pick50–500 gal4500Multi4.9Amazon
Maxspect Gyre XF-33040–250 gal3960Pulse4.7Amazon
Hydor Koralia Evolution 150030–80 gal1500Fixed4.2Amazon
Reef FAQ

Answers to the questions every saltwater aquarist asks

Everything from cycling timelines to coral choices, from a team that runs reef tanks daily.

What size saltwater tank is best for beginners?

Most experts recommend 40–55 gallons for first-time reefers. Larger water volumes dilute mistakes and stabilize parameters faster than nano tanks. If space is tight, a 20-gallon AIO is workable but demands stricter weekly maintenance.

How long does it take to cycle a saltwater aquarium?

A new reef tank typically cycles in 4–6 weeks. Using bottled bacteria (Dr. Tim’s One-and-Only or Microbacter7) and ammonia dosing can shorten this. Wait for ammonia and nitrite to read zero before adding any livestock.

What is a protein skimmer and do I need one?

A protein skimmer removes dissolved organic compounds before they break down into nitrate. For reef tanks of 30+ gallons keeping corals, a skimmer is strongly recommended. Pure soft-coral nano reefs and FOWLR systems can sometimes get by without one.

How much does a reef tank cost to set up?

A solid beginner 40-gallon reef typically runs $800–$1,500 for equipment, plus $200–$400 for live rock, sand, and starter livestock. Premium SPS systems can scale from $5,000 to $25,000+ once you factor in lighting, automation, and rare corals.

What corals are easiest for beginners?

Soft corals are the easiest entry: zoanthids, mushrooms, leather corals, Kenya tree, and green star polyps tolerate parameter swings and lower lighting. Begin with these for 6–12 months before adding LPS, and only attempt SPS once your alkalinity stays rock-stable.

How often should I do water changes on a reef tank?

A standard rule of thumb is 10% weekly or 20% bi-weekly. With dosing and reactors, some advanced reefers stretch to monthly. Skipping water changes entirely is risky — they replace trace elements and remove accumulated organics.

What water parameters should a reef tank maintain?

Aim for: salinity 1.025–1.026, alkalinity 7.5–9.5 dKH, calcium 410–450 ppm, magnesium 1280–1350 ppm, nitrate 1–10 ppm, phosphate 0.02–0.10 ppm, and temperature 76–78 °F. Stability matters more than chasing perfect numbers.

Do I need an RO/DI system for a reef tank?

Yes. Tap water contains chlorine, copper, phosphate, and silicates that fuel algae and harm corals. A 4-stage RO/DI unit (75–150 GPD) is essential for both top-off water and salt mixing.

How many fish can I put in a reef tank?

A common guideline is one inch of adult fish per 5 gallons for reef tanks (much more conservative than freshwater’s 1 inch / gallon). Always plan stocking around adult sizes and territoriality, not initial appearances.

What lighting is best for coral growth?

Premium LEDs (EcoTech Radion, AI Hydra, Kessil) or LED+T5 hybrids give the best coral growth and coloration. Aim for PAR of 100–200 for LPS, 200–400+ for SPS, and stagger lighting ramps over 8–10 hours daily.

Editorial Trust

Reviewed by reef experts. Tested in real systems.

How we research equipment, evaluate livestock, and keep our editorial independent of any retailer relationship.

Reviewed by Reef Experts

Every guide is reviewed by reefers with 8+ years of saltwater experience. We disclose tank size, system age, and parameters behind every recommendation.

Reef Methodology

We test equipment under real reef conditions for at least 90 days before publishing reviews. PAR readings, flow profiles, and noise are measured, not estimated.

Always Up to Date

Every guide displays a clear update timestamp. When equipment is discontinued or new models launch, our recommendations move with the hobby.

Livestock Care Standards

We never recommend tank-mate combinations or stocking levels that compromise animal welfare. Every fish profile lists minimum tank size, diet, and behavior.

Editorial Independence

Manufacturers cannot pay for placement in our guides. Affiliate links never affect ranking — only what reef-tested performance has earned.

Affiliate Transparency

As an Amazon Associate we earn from qualifying purchases. We mark every affiliate link clearly and disclose our relationships up front.

Editorial last updated May 10, 2026 · Reef methodology v3.2
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