1. it's tap water (7.8 pH out of the faucet, pH down to 5.8)

2. I've never fully flushed the system, it's only been in use for 8 weeks. I'd love to hear some good flushing methods if you've got a moment (i'll do some searching too)

3. I am using hygrozyme which (as you probably know) is supposed to clean the grow medium and promote healthy roots, among other things.

thanks for the reply, i hope to hear back soon!
skeet

PS - It says i've disabled my reputation...how to i enable it? i'd like to work my way up if i can.