So I have this mag drive model 2 (250gph) pump just layin around so I thought I would make a vacuum out of it. Gonna go to Home Depot and get a home canister style water filter. Hopefully with around a 20 micron pleated paper filter. And I will be using pvc and various hoses. Question is, when using pvc glue and the purple primer is there anything I should know in particular? I will test unit out of the tank (a roughneck tote probably) so this will rinse everything clean, I hope. How long before glue and primer are cured and considered safe for aquarium use. This unit will be able to move from tank to tank all the while just hanging on the front. Anybody got .02 out there.