as far as adhesives or something to hold the tiles in place, most plain sanded grouts have little or no oder so lay the time down and use some spacers and just use the grout, no adhesives. I make mosaics and the grout I use has nothing but a sand smell to it, but I would still just make sure it was dry and fume free before I put him back in to the tank. But I would not use a vinyl tile al by themselves with out heat they smell when you first put them in your kitchen, so I would'nt want my BD breathing it.