Can I get some advice on a good diy filtration system for a 300 gallon with 2 turtles, a gar, and some medium size fish, 10in or so. I obviously have to heat the water, and i figure a sump involving support filtration and heater would be the most efficient way to heat such a large volume of water. System would include 2 FX5s as well. I know just a little about sumps. And I have a 75gal waiting to be turned into one 
Thanks alot for any advice/suggestions!
Thanks alot for any advice/suggestions!
