sheri100

Hello, I am new to fishkeeping and would like to know if it is okay to add goldfish to a tank containing Eco-Complete?

Nutter

The Eco-complete won't harm the Goldies but I assume this is in a planted tank? If the tank is planted then the Goldies will just eat most of the plants anyway. I've never seen anything destroy planted tanks as fast as Goldies do.
Save your money & have fake plants if you want Goldfish or if you want plants, don't have goldfish, pick something else instead.