Nano reef tank setup with compatibility checks
Nano reefs can be beautiful first tanks when the plan stays simple and the stability gear is not skipped.
Small tanks need enough heat without an oversized stuck-on failure.
Target the 10-30x band: 200-600 GPH before placement tuning.
Use bioload headroom rather than the most optimistic number printed on the product page.
A typical 20g footprint needs coverage across about 24 x 18 in and the 50-150 PAR band.
Monthly supplies often land around $20-$35 before livestock and repairs.
The final answer depends on actual equipment, source water, livestock, and maintenance plan.
What this build has to get right
- Keep the coral goal forgiving: soft corals, mushrooms, zoas, and hardy LPS later.
- Use ATO or a top-off routine that can survive busy days.
- Avoid fish that need swimming length or heavy nutrient export.
Better than a generic shopping list
A 20 gallon plan can fail even when every product is individually good. ReefCrafter checks whether heater wattage, flow, light spread, nutrient export, budget tier, and livestock intent all agree before the cart becomes the build.