Yes, they do. We have used them successfully in well water pools high in iron for over 30 years. The current formulation is for sand filters/glass media filters. They can be used in a situation with a cartridge filter, but Read More …
Q & A: What should I add to my pool water, in addition to FerriTabs? According to Mark, it’s a balancing act. Watch this video to learn more!
We have a swimming pool owner with community water that runs very high in pH. The pool has an automatic filling system on it, so as the pool gets low, water is added. As you can guess, this results in Read More …