I'm a noob, so bear with me.
Just bought new house with 10k gal pool.
Had the pool re-diamond brited 17 days ago. Looks great and we have been brushing daily - chemicals all check fine at local pool store.
My problem -
I clean the cartridge filter every other day and the pressure drops down to 3-5 psi. I have two outputs things (sorry) that shoot out of a wall on the pool into the pool (return filtered water). These two water spout returns shoot out real far right after I clean the filter - and if I put my hand by my output jets (in the pool) they are blasting out water.
Problem is about 15 minutes later - the two water spouts on the wall are about half of what they were and the two output jets in the pool aren't putting out much water.
As a test, I cleaned the cartridge filter again - and same thing starts out strong then 10-15 minutes later - not much water output.
I don't think this is normal - I'm new at this but it wasn't doing this before. Could it be that the filter is just done? I was hoping to wait till 28 days to replace filter.
What else could it be?