My neighbor bought several bags of quikwall wall bonding cement and made a tank with 3 sides concrete blocks coated with the quikwall it has fiberglass in it he has it mounted in the wall so you cant see the crete at all or I would take a pic, but do you think this is safe to use? He used a LOAD of silicone to seal the glass and it looks like the water pressure maintains the seal mainly. His tank is filthy since he neglected to make an easy opening door to get into the area and now he has couch in front of it. It has been up for nearly 3 years and was wondering if anyone has tried to make a large tank this way and if the curing time would be less since it has fiberglass in it also. With this type of tank the "stand" could be the concrete blocks filled with concrete and then add a wood veneer to hide the concrete work, and as long as you have the blocks seperated by wax paper or something else you could move the "tank" portion and then move the base to relocate it, although it would take several men to do. Any ideas and pros/cons?