jrod

There is brown spots forming all over the tank in plastic plants, ornaments, glass. I this some kind of algae or what?

Janmitch22

jrod

swordtails, corys, zebra danio, ghost shrimp, snails, and cherry barbs.

Peter243243

Can you show us a picture of it?

but my first guess is algae.

try less light, other plants, and those tablets that are supposed to get rid of algae.