Hi Lisa, Welcome to the list. You will find some real gurus here. Sorry, I am not of them :) Here are a few sites to get you started though. If you don't find your answers there, feel free to ask them here. the Krib www.thekrib.com the APD archives http://www.actwin.com/fish/aquatic-plants George & Karla Booth's site http://www.frii.com/~booth/AquaticConcepts/ Daphne in Atlanta