Here is what I have set up for my group of 2.6 Zebras and some juvies (about 4 or 5). The tank is 55 gallons and has 2 Emperor 400, 1 75 gallon Wet Dry filter with a Rio 2200 pump, 300 watt heater, 2 air stones, 1 Powerhead and several pieces of driftwood, slate and caves.
I tried to take some pics that show most of the setup but feel free to ask for more pics or anything else. I am basically looking for what I am doing wrong, if anything, so I can fix it.
I added about 30 gallons of RO water and the rest was tap water without chlorine. Tomorrow I will be reading the pH, hardness and temperature once the water has been thoroughly mixed and settled.
Look forward to the comments.
Ivan

Overview of the tank.

One of the 3 cave arrangements and 1 airstone in the background behind the driftwood.

Second 3 cave arrangement.

Powerhead and second airstone in the background.

Two Emperor 400 filters and the wet-dry overflow box.

75 gallon Wet/Dry filter with Rio 2200 pump and 300 watt heater.