seio 620 or 820

[rbarb1111]

Do you think a seio 620 would be enough flow in a 30 gallon tank or should i go with the 820. if the 820 is too much is there a way to turn it down.

 

[fishman]

If it were me I would buy the 820 and then turn it down as it does allow this if I remember correctly..who knows you may need it later on and then you wont have to go and buy another one!

 

[AndyH5512]

I have 2 of the 820 models in my 120 gallon tank, and there is in fact a piece that allows you to turn down the flow.