Safe fertilizer????

[boabab95]

You shouldn't/ dont need ferts in a viv, the plants will be fine with the frog poop, and from any materials breaking down in the substrate (with the help of microfauna)

[rudd03]

my plants are growing but the edges of the leaves are turning brown.

[boabab95]

then you have a lighting problem. either the plants dont like high light, or the lights are too bright.