Quote Originally Posted by britinusa View Post
My test Numbers:
FC 1ppm
PH 7.5
TA 130
CYA 40

My pool is only open for the summer I close it in September and re-open in June.
This year I started with the cartridge that I put in last august and that will most likely last till this august.
So i replace them every 5 months of use.
It works for me as Im using less chlorine than i hear some people using.
Their website says that nothing effects the life of the cartridge, so I cant see an issue with removing it at the end of the season and re-using it in the the spring.


Above ground pool 6600 gallons
Hayward super pump
Hayward EC50 DE filter
According to the newest info on the Zodiac website the cartridge should be replaced every 6 months or 1 season, whichever is shorter. (which is what the cart instructions have said for the past several years) It says nothing about keeping a cart stored to use the next season.
http://www.nature2.com/files/TL2800_...ers_Manual.pdf

The 'spring cart' you use for startup is actually a lanthanum based phospahte remover in cart form. The price is a bit high for a phosphate remover since 2 liters of Natural Chemistry's PHOSfree is available for about $20-$25 and will treat between 20 and 40k gallons of water. House brand lanthanum phosphate removers are usually even less expensive.
Then again, there is no real need for phosphate removers if the chlorine is kept at proper levels, and the proper use of chlorine is much less expensive than using phosphate removers.