i know tank should be drilled but that is not an option already set up anyway which overflow do you guys reccomend for a 90 gal will use a 9.5 mag drive for return read about cprs let me know what is safest thanks
I've used a couple of LifeReef hang on overflows and really liked them. Well made and they don't loose syphon. I believe each is designed to carry about 900 GPH.......I know they worked well for me and numerous other reefkeepers have posted positive experiences with them.
I have a cpr that is 800 gph that I am getting rid of. It was only used for like 3 days, I decided to ditch the sump idea. if you want I can send you a pic.