Applied / spread ascorbic acid once first two months (of opening). Since then AA treatment almost every week due to brown / iron staining, and wondering what's going on as nothing significantly changed. I even took the pool light out, cleaned out the niche (was pretty dirty and this may be causing some mustard algae which is another story - if you are going to remove your light, please have your vacuum ready-to-go before dead / live algae spreads), and currently soaking screws in vinegar / AA to remove any rust.
FC 1.0 (will increase / go through SLAM then Mustard Algae treatment)
pH 7.0 (had to lower TA and aerating a bit)
TA 75
CH 50 (but vinyl pool)
CYA 70
Borate 40
Not sure why iron staining is occurring so frequently...went through 10lb of AA this season already and looks like another 10lb until closing (mid-Sept??).
I did read on a TFP board that I should not increase FC dramatically once I go through AA treatment so I did so..in fact, was going through the process of slowly increasing FC but this occurred again.
Any insights? (oh...have Culator and poured in 2 qt of Jack's Magic Purple 2 weeks ago)
FC 1.0 (will increase / go through SLAM then Mustard Algae treatment)
pH 7.0 (had to lower TA and aerating a bit)
TA 75
CH 50 (but vinyl pool)
CYA 70
Borate 40
Not sure why iron staining is occurring so frequently...went through 10lb of AA this season already and looks like another 10lb until closing (mid-Sept??).
I did read on a TFP board that I should not increase FC dramatically once I go through AA treatment so I did so..in fact, was going through the process of slowly increasing FC but this occurred again.
Any insights? (oh...have Culator and poured in 2 qt of Jack's Magic Purple 2 weeks ago)