FROG Bac Pac Replacement Chlorine Cartridges for use with Pool FROG Model 5400 and 6100 Cyclers - Prefilled for Easy & Convenient Pool Sanitizing & Water Care - 6 Pack

Works for pool

We use this in our pool every year! Our pool gets full sun the entire day and it zaps the chlorine. These canisters help keep chlorine in the pool. Such an easy installation and cuts down on our daily and even weekly maintenance. I highly recommend.

It's exactly what I ordered

Been using for 10 years no complaint

These are great pool chemical dispursment system.

Absolutely terrible!!!! The parts do not fit my filter and it says it’s supposed to. I cannot return these items because Amazon won’t let me through the normal return process on the website. I am out almost $100 and this is the second time it’s happened with a different item for my pool. I’m considering never going to Amazon for pool equipment again.

Easy to use but have gotten way too expensive. I would install something different if I were to do it all over again.

Came packed well ... Love buying the season at once very convenient