Tank Size Input, new tank Options

[johnism]

Ok I am limited on space and I am trying to decide on a tank size .
I am only wanting Ranchu with a bare bottom set up. Proubly only two fish ( could I have three in 30 gallons ).

I would love a 30 gallon tank ( 20.5 L * 21 W * 18 H ) cube
but I might get a standard 29 ( 30 L * 12 W * 18 H )
I have a fluval 404 to use ..is that to much over kill?


Thanks for the input ,
John

[CP]

Too much current from airpump is not too much of a concern, furthermore Rena 400 comes with adjustable airvalves and you can tune the airflow to your liking.Personally I prefer air currents to be strong.

As for your Fluval 404, it is turning over the tank water 10 times per hour (assuming tank capacity is 30 gallons). While technically you can filter the water as many times as you like (ie you cannot 'overfilter'); I suspect the currents created may be too strong.There is a possibility that juvenile fish may be sucked and stuck at the water inlet.