DeFeKt, you explained it in laymens terms for me, perfect! I could understand it. Pghjeff71, I found lots of info at the link provided , plus lots of info on other stuff I would need to know.
Guess I will be setting up a sump soon!
Okay, I'm new, so I have to "act new" for a minute... I LOVE this site! I've posted all of four items in the last couple days and gotten more info from more people than from all my fish store contacts in the last month. I'll definately recommend the site! THANKS!