Hello, I have some issues with rust inside my cartridge filter. See pictures.
Pool is about 3 years old. Located in a Houston suburb
Using BBB from the beginning. Never had an algae
Here are my typical chemistry ranges:
PH is 7.6 - 8.0+
I am out of town during the week, so typically all maintenance is happening on weekend. Typically I add 1/2 to 1 gallon of acid every week. PH is back in 8.0 range every week
When TA gets down to 40 I typically bump it up with baking soda
Salt level varies depending on the amount of rain we get. Typically when it drops below 3000 I add 2-3 50lb bags of salt
Gets lower with rain but then trending higher with fill water
I wonder if these swings in PH (due to weekly maintenance cycle) can cause such rusting. I wonder if I need to get an acid feeder.
I have noticed rust about a year ago. It is getting worse.
Any thoughts? Suggestions?