I know you guys will disagree, but.

[Shootemz]

I have a 20 g high, with what's going to be 3 filters a tertra power whisper 10i and a 60, with a top fin 30. All together rated at 570 gph, would their be so much as to much or maybe make too strong of currents.

[Cory Catfish]

The whispers barely have any currents IMO, and you can't adjust them either. I don't think it would have that strong of a current.

[Honey Badger 1]

In my opinion you cannot have too much filtration, but you can have too much current. Some fish don't appreciate the strong current, such as fish with long flowing fins like betta.

[mermaidwannabe]

If you're concerned about excessive current, why not use filters that allow you to adjust it? The Aquaclears have flow control valves on them that let you manage the current -- up to a point. Some of the units regulate it better than others.

As for filtration -- the more the better.

--mermaidwannabe

[Shootemz]

Well the thing is that the 60 which I just bought goes for about 60$ at a store and I saw a new one on amazon for 15$ and I just had to jump on it.

[wijnands]

You got a lot of filter stuff distracting from the look of your tank and you got cabling spaghetti. I'd rather get a good canister and hide it.

[Shootemz]

Lol theres no way I'm getting away from the spaghetti I have 3 tanks set up in a row with only 4 plugs.

[Shootemz]

I also generally don't care about looks, just whatever makes the fish happy.

[wijnands]

Each to his own I suppose. In that case you will enjoy the benefits of being able to stagger cleaning of filters.