The filter is where most of your tank's beneficial bacteria grow: compare types in aquarium filters, then canister filters, Fluval 207 vs 307 and gentle sponge filters. Heaters lists each maker's own sizing chart. Lights covers the 12-hour cycle, and gravel vacuums makes water changes easier. Specs come from Fluval, Aqueon, EHEIM and the Amazon listings.
Gear guides
The three filtration stages, the main filter types, and hang-on-back filters compared by maker specs.
When a canister makes sense, and Fluval's four 07 Series canisters compared from official specs.
Fluval's two mid-size canisters compared from official specs, with turnover math.
How sponge filters work, when gentle flow matters, and sponge filters and air pumps compared by listing.
Heater wattage by maker chart, target temperatures, safety, and Aqueon, Fluval, EHEIM and hygger heaters compared.
Light cycles and plant lighting from extension sources, and hygger and Fluval LEDs compared by listing.
Siphon gravel cleaners and faucet water changers compared, with tank-size guidance from the makers.