Penguin 200 for 46g.

[Marconis]

We were having a discussion tonight in the chat. Do you think a Penguin 200 is too weak for a 46g. tank? Before I started cycling, my water was just about to clear up but then I got bacteria bloom, so I haven't really been able to see for myself yet.

 

[Lepomis]

It is fine. Unless you have a huge bioload (no fish yet so doens't fit the bill) it will do just fine. A small powerhead would be more beneficial to negate any dead zones in your aquarium.