I am a brand new pool owner going on 7 days now. The previous owner had a pool guy that I will continue to use until I get my arms around everything. I'm a DIY'er so I'll eventually do all this myself...or that's the plan. (I have yet to get a hold of the "pool guy")
I'll tell you what I know about it. It's a low chlorine, in ground pool with a waterfall in the deep end. I think it's 35k gallons. I have a sand filter and my climate is outside of Memphis TN. I have not had the water tested yet and the water is clear.
The previous owner gave me a crash course on what he does as far as maintenance.
-Drop a couple of chlorine tablets in the skimmer each week
-Backwash every so often
-Empty skimmer and polaris debris bag as needed
-Clean out pump skimmer each week or so
Here's my question: The gauge on the filter has never been lower than say around 18 since I've been looking at it. Almost every day of the last week, I've watched this gauge and it creeps up to the mid 30's and the water feature slows to a trickle. So on the first day, I backwashed, rinsed and cleaned all skimmers. When I turned everything back on, the water feature was rocking and rolling and all was good...except the same thing happened the next day, etc. After a backwash/rinse, the gauge goes back to around 17-18 and then slowly creeps up.
I know this is too often to backwash, but I don't know what else to do. Is this increase in PSI normal? Is mid 30s to high? I'm thinking the sand in my filter needs some attention. Can someone help?
PS: Some additional info is that I feel certain me and my family (and dogs) have used this pool more in the last week than the previous owners probably did in a month. We've also had two really big storms in this week.