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The technical time to shock is when the combined chlorine (total minus free) concentration is .2 ppm. This is tough to measure with a test kit or test strips. With my Taylor kit, I wait until I show zero free chlorine (so no pink), then add reagent for total chlorine. If it turns pink at all, its time to shock; if it stays clear, I can wait.A safe method is to shock weekly. As a minimal dichlor user, I prefer MPS to shock, though I like to raise my free chlorine level to between 3 and 5 ppm once per week.I leave my cover off for about five minutes after adding chlorine after use, fifteen to twenty minutes after shocking, nothing after adding other chems.
I've been just throwing the diclor in with the filters after use and putting the lid on the filter area, then closing the lid immediately while I have it run out the "clean" cycle.BearBath
I thought that you weren't supposed to put the chemicals in the filter area. I think thats what I've read somewhere, but what do I know I don't even have a spa.
You use more MPS than dichlor, I use 1/4 cup of MPS to shock and 1 1/2 to 3 tablespoons of dichlor.
um, that sure is a LOT more MPS than I use to shock. I use two tablespoons for 300 gallons.
Just about everything I've read from the chemical manufacturers states "do not add chemicals to the filter compartment. Â However, on the underside of my filter compartmetn lid, HS has a sticker that says "add chemcials to filter compartment. Â !?!?!?! Â Confusion. Â I just err'd on the side of caution and figured it would be better to disperse the chemcials on the broader surface of the water rather than concentrating them in that small filter compartment. Â Who knows.-Sarge