I got java moss in the shrimp tank, Im not sure if it will grow but I added tetra plantamin fert and didn't realise that some ferts have copper in them I have read the back of the bottle but it doesnt say anything, is this OK for the shrimp?
You do need to be careful with the things you add to the shrimp tank, they tend to be a bit sensitive.
The copper in most of the plant foods are a different kind of copper and is usually shrimp and snail safe.