Hey I know this isn't exactly about plants but I noticed that many of you have various fresh water shrimp in your tanks. I am starting to see some signs of Ich in my tank, Fish scrtaching on rocks and plants and a cradinal has a large portruding white thing from its forehead. I bought Mardel Maracide and read the directiond up and down and didnt see anything about harming invertibrates but I wanted to make sure. Do you know if this is safe and is there a more preferred product?