Plumbing recommendation for Mag 12

I've got a mag 12 and a 75 gallon laying around. I'm looking at using some PVC to make a stream tank design live I've seen on here before. Prefiltered intakes on one end and the pump/output on the other with tubing under the substrate. The mag 12s are designed to tie into 3/4" fittings, but I'm wondering what size of PVC would be best to use and how many prefilters/inlets to keep from potentially starving the pump/cutting flow.

Also would 1200gph(which is the optimal rating) be too much or too little for a 4ft stream tank?

Ultimately, I'd like to get a group of Saffrons and some type of darter that I haven't decided on yet. Along with some others to fill out the tank of course.

Edited by Clayton, 28 August 2009 - 10:17 AM.

My first thought was how much heat will the magdrive 1200 add to the water? I wouldn't think it would be too much flow if you are going to use a spray bar to distribute the flow across the entire bottom. Fish can usually find spots to hide from the current.

I've considered the heat thing. They are low watt draw pumps, so it should be fairly low. I can stand a bit of a bump since the basement keeps tanks in the mid-high 50s without heaters or pumps in them. If it becomes too much during testing I'll probably have to drill the tank and add a closed loop instead of running the pump submerged.

Just not sure if I want to go with 1" or maybe 1.5" piping instead of 3/4" to make sure the inlet doesn't starve the pump.

Edited by Clayton, 28 August 2009 - 12:00 PM.