Good morning,

a PVC joint, properly primed and glued, will hold pool-type pressure within 2 minutes....usually less. Something else is wrong...not the glue.

What ABS to PVC connection do you have? Thats unusual.

Just to chime in, your pump is too large for that pool. Unless you have a really large filter (130gpm plus), you'll be running unnecessary pressure in your sytem. Not enough to have ANY effect on the glue joints, but causing you to burn unneccessary electric.