I made 3 pieces. It took about 2 full months to cure in plain water changing it once a week. I put a powerhead in it and that was it let it go. I have two pieces in my tank now that, other than the shape, look like the rest of my rock. It was fun to make and very inexpensive! I went and bought bas rock cause I didn't want to wait for more curing time. The shapes I put into the tank are flat shelf like with "feet on them. I put them into the sand touching the bottom so my engineer goby would dig under them without toppling over the rest of the rock. He seems to like them! |