I am new to owning a spa, we just received our Artesian Grand Cayman Elite 450 gallon about a month ago and have been battling water tests the whole time. The spa has the Frog inline @ease system and every time I test the water the chlorine level is low on the frog test strips. I spoke to my local pool/spa store and they keep telling me to add jump packs, and maintenance multiple times a week. Even when doing this I am still running into the low chlorine level. Plus with the cartridge on level 6 i'm replacing every 8-12 days. I don't think this system is sufficient enough for the spa and it certainly is not economical at all. I've spend more money on cartridges, jump packs, and maintenance packs in the past month than I have spent for my pool all summer. Which route could I go I am planning on changing to a different system this week and draining spa/cleaning filters when doing so. Any suggestions will be greatly appreciated. Thank you all!