I have been looking online for some sort of diagram/help on how to get my water flow better, yet at the same time not over do it. Basically don't want to see the bottom glass of my tank because of the tornado i'm causing. My main problem is the red slimy, bubbly algae growing on my sand and some rock. This stuff is rapidly spreading. I have 4 power heads in this 90 gal tank. 3 are the maxi jet i believe 1200, and one hydor koralia.. like the next to smallest one.. can't remember the size and i'm at work so no way to get it at the moment. Two of my maxi jet's have the rotating end on them. I plan on buying more power heads.. it just seems like it's fixin to get really cluttered in the tank really soon. Any help with a link or anything would be greatly appreciated.