Well yes like the title says i have many questions on prop systems. The whole reason is to start rapidly growing zoa's so my collection can become bigger with trading.. 
I need a prop system 30 gallons or lower and 24inches max on length. What size aquarium would be best for a system so small and could the best choice be one of the small cubes, like the AP24, and put a 175 retro on it?
If not the AP, what are my choices for filtration then. Just some power heads and weekly water cahnges because there isnt going to be any fish if its not going to be self contained like the AP.
And last but not least. I have still not taken the plunge into MH's yet. I was looking around but i have no idea what zoa's grow best on higher or lower k??
Thanks Steve

I need a prop system 30 gallons or lower and 24inches max on length. What size aquarium would be best for a system so small and could the best choice be one of the small cubes, like the AP24, and put a 175 retro on it?
If not the AP, what are my choices for filtration then. Just some power heads and weekly water cahnges because there isnt going to be any fish if its not going to be self contained like the AP.
And last but not least. I have still not taken the plunge into MH's yet. I was looking around but i have no idea what zoa's grow best on higher or lower k??
Thanks Steve



