i've read that i could use insulating foam and carve out the the backround to make a strucure i want and then use silicon and press substrate to it. is that corect?
could i carve out part and make it a planter in part of the tank?
what about using part for the water fall feature? It would hide the hose and pump and the water would trickle down it in the way i want
would it hold water and still be chemical free?
loads of question if you could could come up with information about any of this it would be great

