I use 33% Perlite, 33% Sierra Organics Potting Mix & 33% Sierra Organics Top Soil. One drop of Superthrive per gallon of distilled water.

Right now Ive got a 265cfm Dayton fan bringing fresh air in but no real exhaust fan. I figured the incoming air would force out the old air since I leave the door open during lights on. But I ordered a 6" Vortex that will be here this week and I'll set it up as an exhaust.

Based on some pictures off damping-off that I looked up on the net, it sure does look similar. I'll bake the soil before my next attempt just to be sure.

Thanks for the replys...