[fishcurl]

I'm not a plant expert by any means, but are you using fertilizer for your plants?

I've always sucked at aquatic plants, but when I started using fertilizer I haven't killed one yet. You can get liquid or root tabs depending on what kind of plant it is for.

Java Moss is a low-light loving plant but it just kinda floats there. Or at least mine floats there, hehe.