I have a bag of mortar, maybe even 2 bags of it, laying around. I used to to build a retaining wall outside. Can you cover the Styrofoam blocks in this or is it not the right stuff? I think I would have to make it very runny though. Thanks!
Thanks. I won't be doing it for while (november) because I plan on doing it in a 70 gallon ('im getting the 70g on my bday, which is on thanksgiving lol!) and I need lots of time to plan everything out so it's perfect. From looking at all of those threads that the first poster gave me (thanks) I think i'm going to use grey drylok. I like it's color when it's wet. And I don't think you need to soak it in vinegar either (correct me if i'm wrong)