Extra flow through rocks

[lsu_fishfan]

I am considering adding an extra powerhead to the back of my tank to get extra flow through the rocks. If anyone does this, do you notice a decrease of algea on the rocks? If I add a powerhead to my tank, is their a chance of toxins being pushed out of the rocks(sulfer pockets)? Am considering using the smallest hydor koralia nano powerhead, are they good or should I look for a different pump? Thanks.

 

[lsu_fishfan]

Bgcoop8784;1009266 wrote: I had a hydor nano 425 behind the rocks in my 60 cube before I re-arranged the rock and I have one behind the rock work in my 40b, seems to work great.

Have you noticed a decrease in algae on the rock?

 

[dustin]

I have two hydor nano's on either side and actually move them every few days to keep the rocks clean of debris and algae. Seems to work pretty good.

 

[camellia]

I've had two of the small hydro Nano's for years, they are good pumps. I use one now in my overflow to keep it clean.