I'm a relatively new hot tub owner. I'm on my second refill after purchasing the hot tub about 6 months ago. One thing I've been having a difficulty combating is iron. I'm filling it up from a well that does not go through a water softener. I am using two EcoOne hose filters combined to help with the hard water. I also use an entire 16 oz bottle of Metal Gon when filling. It seems to work fine for about the first 6-8 weeks. Then after that I notice the filter starts to get really brown/orange. Then staining around the bottom circulation pump jet starts to show.
I believe the cause is iron in my water. The local pool store said the copper in my water was 0 but they couldn't test for iron. I know pool stores can be inaccurate, but I don't have a test kit for iron. Anything you would suggest to keep the staining away? The local pool store just suggested more sequesters like Metal Gon. I also have not been spraying down my filters with a hose enough. I try to do it once a week, but it really isn't that frequent. I'm wondering if just doing that will keep the staining off the shell of the hot tub.
Here are my readings:
I believe the cause is iron in my water. The local pool store said the copper in my water was 0 but they couldn't test for iron. I know pool stores can be inaccurate, but I don't have a test kit for iron. Anything you would suggest to keep the staining away? The local pool store just suggested more sequesters like Metal Gon. I also have not been spraying down my filters with a hose enough. I try to do it once a week, but it really isn't that frequent. I'm wondering if just doing that will keep the staining off the shell of the hot tub.
Here are my readings:
- FC: 5.5
- CC: 0.5
- pH: 7.5
- CH: 130
- TA: 70
- CYA: 30