I am currently converting a 75 gallon aquarium into a paludarium! This is my first paludarium and I kind of did things backwards, instead of doing the background first i did the dam thatll be separating the water and land first. Instead of buying great stuff (will have to order) I used this stuff called DAPTEX plus, the guy at home depot said it would work and after doing the recommended dry time on my rock wall made with pond rocks I did a tilt test with towels laid in place in case of a fall. And within in 10 seconds of me tilting the tank the rock wall slide and collapsed, my tank didnt break but I have to start over. I have seen many people using great stuff but will it be strong enough? Or is there something else that I can use, open to all successful solutions! I want to do this the right way so I am not willing to rush it!