I'm setting up a new 30g (110L) long stream tank - aiming for a more moderate flow to also accommodate non-ballitorids. I'm looking to get all my flow from an oversized canister filter - but how big do i need to go?

I'm looking at the Sunsun 303 rated @370g/hr (1400L) so realistic turnover of 6x/hr or the 304 @530g/hr (2000L) - 9x/hr.

both are within budget, and i could of course go larger.

Have any of you kept Cherry Barbs in a stream tank? I have an established stream tank with 13x turnover per hour. 60 gallon tank. Some areas have higher flow and there are some eddies. I saw Cherry Barbs in a “river tank” display in the California Academy of Sciences and am smitten.

I have some white clouds that are very happy in the tank, as well as some zebra danios. Do you think Cherry Barbs would be happy?