Welcome guys!!!

Quote Originally Posted by venturajm
Hi folks, Thanks for helping a newbie. I just got my two bell siphons set up, and they're working great (besides some hydroton getting underneath the guard and sucked down to the tank).

My question is this: My grow beds are filling up and draining every 7 minutes (=8.5x per hour). Is that too frequent? Will that cause root rot? Should I go buy a smaller water pump?

Thanks for the help.
It will cause the opposite of root rot. It will cause roots.

Since you already have it cycling that much, you might as well leave it. You can reduce the flow, but you can't hurt it with that kind of cycle. If anything, it's keeping your dissolved oxygen (DO) very high.