Been fighting with the brown, metal stain for a few years and obviously sequestrants work (I found GLB to be the best) - no well water but I know our city water contains some metal / iron as our toilet's get stained.
What I found interesting (and experienced for the first time) is that ascorbic acid seemed to "work again" after a few days of the application:
1. Day 0 - as usual, about a 1-2lb of ascorbic acid which eliminated the brown, metal stain immediately
2. A few hours later, I dumped the initial dose (1 full bottle of the 2lb Super Sequa-sol)
3. Day 4 - light brown stain around the steps (plastic) but not around the skimmer, light housing, etc
4. Day 5 - a few scoops of ascorbic acid around the steps and a bit of Jack's Purple - all cleared again
5. Day 8 - a bit of brown stain came back - was planning to put in "some" ascorbic acid then a maintenance dose of GLB
6. Day 9 - however, this morning, all stains are gone
This is good but I never found ascorbic acid "kicking in" after a few days of my application. (I also have the Culator 4.0 running in the pump basket).
Any insights, experience would be greatly appreciated.
What I found interesting (and experienced for the first time) is that ascorbic acid seemed to "work again" after a few days of the application:
1. Day 0 - as usual, about a 1-2lb of ascorbic acid which eliminated the brown, metal stain immediately
2. A few hours later, I dumped the initial dose (1 full bottle of the 2lb Super Sequa-sol)
3. Day 4 - light brown stain around the steps (plastic) but not around the skimmer, light housing, etc
4. Day 5 - a few scoops of ascorbic acid around the steps and a bit of Jack's Purple - all cleared again
5. Day 8 - a bit of brown stain came back - was planning to put in "some" ascorbic acid then a maintenance dose of GLB
6. Day 9 - however, this morning, all stains are gone
This is good but I never found ascorbic acid "kicking in" after a few days of my application. (I also have the Culator 4.0 running in the pump basket).
Any insights, experience would be greatly appreciated.
