slayer77;72203 wrote: jeff i've used piping 5 minutes after i've glued with pvc...on the chiller i just plumbed into the tank i waited 1 hour, because i needed to cool the tank quick .never had a problem with it, but then again i always used carbon in the tank.. but i agree i guess you should wait 24 hours to cure...but never had a leak or bad results when i didnt...