Hi, Im building a desert set-up with polystyrene, tile grout, and a sealer+sand. Its working out pretty good, but i was wondering if i could use the same things for a tropical set up, and use same materials to make a "pool". My two main conserns are 1 - will the water leeche anything out of the products harming the animals, and 2- will that hold water?

thanks for your time

-echo

(tank not for this snake)