Originally Posted by ecichlid
You keep writing that you have to mix your substrate with TB3. No you don't. I use black expandable foam (if portions of foam are not completely covered, it's black, it looks good). I then brush on about a cup of TB3 and then press in virgin peat moss. 24 hours later, the viv is ready to go. Try that method and you will never go back to mixing your substrate it use silicone.
Do you have a pic of the peat moss background you speak of? I'm curious to what it looks like. Also, does it create a rock hard coating still?