Like many others I read about I found out too late that using chlorination tabs adds CYA to your pool water that accumulated until you can't keep up with the chlorine and need to drain/refill your pool. LPS read 80ppm CYA last week and FC of 8ppm. They told me my FC was too high, so I read about it and found out that you need a higher FC level at 80ppm CYA than their recommended 3-5ppm, so my 8ppm should be perfect. Next time I visit the store I ask them about it, but the guy there knows nothing about a CYA and FC relationship. I'm still unaware of the CYA increasing with the use of chlorinating tabs and happily buys an in-line feeder for my tabs which I proceed to beautifully install, feeling really proud.
Now after having read a bunch in this forum I understand that using those **** tabs is setting me up for having to replace my pool water partially. I ordered my own CYA test kit and read 100ppm (I haven't diluted with 50% tap water to get a more accurate reading yet but it's bad enough as it is). I'm starting to think that LPS has a policy of acting like they don't know about the thichlor/CYA relationship to get their customers to just buy more of their expensive chemicals? Does LSP have a rep on this forum? Most reputable companies does have a presence on active forums to gain consumer trust. I'd like to know why a pool supply store doesn't know about this very basic thing that it seems like everybody that works with pools are aware of?
From now on I'll get my chemicals from amazon.com and Walmart and use the poolcalculator.com and a TF-100 to figure out how much I need.
Thanks to all the experts on this forum whose posts I been reading!