Circulation may be inadequate

[livinlifeinBKK]

So I have this one power head you can see on the far side of the tank and it was pretty strong when I got it but now it's pretty weak...other than replace that one though, where should additional power heads be placed? Should the currents intersect at the middle?

 

[livinlifeinBKK]

 

[Uncle99]

Pumps lose power as they get dirty.
Intersecting like you suggested.
You can also consider an on/off timer for even more variations of flow.

 

[livinlifeinBKK]

Pumps lose power as they get dirty.
Intersecting like you suggested.
You can also consider an on/off timer for even more variations of flow.

I'll try another pump and try to remember to clean them both... pretty simple solution

 

[Uncle99]

I'll try another pump and try to remember to clean them both... pretty simple solution

I was shocked at the power loss even in three months use.
I find a calcium buildup on the impeller.

I like lots of flow available.