[AJ_77]

Jon, I don't know if you should run that sand through/with your main system. It's going to cycle; I thought you'd have it separate - in the sump - before letting it "join" the main tank water.

Guess I didn't give it much thought last night. I put mine all together, but the two cycled together and settled out together.

You might consider "quarantining" the sump tank for awhile.

Alan