I've been having problems with my java moss. When I got it it was a nice healthy green and I put it in my 12g tank, within two weeks it was brown all the way through even though the rest of my plants, including peacock moss, are growing strong. I dose Excel and I read that could be why so I moved it over to my 3g fry tank where I use no ferts. It is still brown, but does seem to be growing, but what grows is brown too. This tank is just a little 3g, 7 watt light, 10-12 hours a day, about a dozen guppy fry with just some bits of peacock moss and naja grass in there and one sprig of anacharis. I do keep the temp high for the fry, about 80F. Any ideas on how to get it to green back up?