Filtration in 3 ft tank

[SinSisteR]

What's kind of filter is recommended for a 3 ft tank? Those with rainbar or without will be better? Mine is a planted tank, so water circulation will be crucial to prevent algae from growing.

[Cacatuoides]

You can go for canister filters with a minimum flowrate of 600L/Hr....
Eheim 2026 would be a good choice.....
Using the rainbar would be better to obtain a good circulation in the tank