My pump was down for about while before I could fix so I have a very cloudy pool. I started the SLAM process but from recent experience I know it takes about a week of constant pumping for the water to go from very cloudy to crystal clear and that is a long time to maintain the chlorine levels ($$$). After the initial backwash, in about 12 hours, the pressure really does not move up for the rest rest of the SLAM suggesting to me the filter is not filtering much given how much there is to take out of the cloudy water. I have started to experiment with the paper fiber additive to the filter to increase its filtration and after wasting a lot of it by using too much I find I can get the pressure to start to slowly rise with about just 3oz added requiring a backwash in about 12h hours. Adding any more than that and it gets to overpressure in a just a few hours. I assume, as the pool clears, this feedback loop will be change requiring more fiber or longer pumping to get to overpressure..
I paid to have my sand replaced about 4 years ago, and topped off my sand level last year myself. It was 2-3 inches low.
Questions:
How quickly should a sand filter clear a green pool under SLAM?
What is the optimal change in pressure you want to see while clearing a green pool? Seems like going days and days with a cloudy pool with no pressure change is wasteful of energy and chlorine.
Last, I noticed that the filter can be overpressure, or even +5-6 psi, and the act of shutting off the pump causes the water to flow back some and it resettles the solids in the filter such that the pressure returns to the lower starting pressure when turning it back on and not not having backwashed. Should I backwash when this happens or is it fine to wait for it to get back to +10 on its own?
Thank you in advance.
I paid to have my sand replaced about 4 years ago, and topped off my sand level last year myself. It was 2-3 inches low.
Questions:
How quickly should a sand filter clear a green pool under SLAM?
What is the optimal change in pressure you want to see while clearing a green pool? Seems like going days and days with a cloudy pool with no pressure change is wasteful of energy and chlorine.
Last, I noticed that the filter can be overpressure, or even +5-6 psi, and the act of shutting off the pump causes the water to flow back some and it resettles the solids in the filter such that the pressure returns to the lower starting pressure when turning it back on and not not having backwashed. Should I backwash when this happens or is it fine to wait for it to get back to +10 on its own?
Thank you in advance.