i just wanted to say thank you again to everyone for their ideas about my tank. i just wanted to update you all that gave me ideas and let you know that i have changed my lighting to pc's and started doing weekly 10% changes rather than the 25% every 2-3 weeks like i was doing. some of my stuff that was to far gone ended up dying, but all my new stuff and some of the old are thriving now. things are growing and spreading. it's so nice to see that change. i get so excited when i see a new polyp growing. it's a really nice change. again thank you everyone for your help with this problem.