Hi all,

I am changing my tank over to a discus tank and have a fair bit of flow and believe that this is no good for discuss.

My tank is a 48*18*20 75 gal with an eheim 2217 and a 1500l p/h power head running my diffusor.

I was thinking of ditching the spray bar and either:

A) Building a new spray back that sits about 6 inches below the water but runs completely around the sides and back of the aquarium - This will disperse the water more effectively

B) Run a PVC frame work down under the Substrate which could rise up at 4 or five points to distribute the water flow at different points around the tank (Hidden by wood, rocks, e.t.c) which would cause gentle currents around the substrate - If I planned this pretty well I could probably get it so that it gradually works any crud on the bottom back towards the filter inlet.

Any ideas, thoughts or comments?

Any thoughts on these two ideas.