First Results With Taylor K2006 Test Kit

[rjordan390]

It appears my pool water is close to being where it should be. A little more fine tuning and I think I'll be there.

pH is 7.4, FC is 4.0 ppm, CC is 0.5, Alk is 140 ppm, CH is 170 ppm, its low but I am working on it and Saturation index is 0.00.

The CYA appears less then 30 ppm, which might be understandable because I shocked the pool a few days ago. The black dot did not disappear while tittrating but increased in size. The test does not read lower then 30 ppm. I am using 1 and 3 inch tablets that have stabilizer. The 1 inch tablets were placed in my filter and the 3 inch tablet was placed in a floater. After my FC test result of 4.0 & CC result of 0.5, I removed the floater.

Comments appreciated.

[waterbear]

CYA level will not change by shocking. Your CYA is low. Period.

Your pool is vinyl, You don't need to worry about low calcium hardness (only very high calcium hardness which can promote scaling conditions) nor do you need to worry about saturation index. That is for plaster pools.

All trichlor tabs contain stabilizer. It is a chemical made from stabilzer and chlorine and is the only chemical used in feeders or floaters. If you have a cartridge filter I would be careful about putting the tabs in your filter. They are very acidic and can destroy the rubber endcaps on cartridges. Your trichlor tabs will add CYA at a rate of 6 ppm for every 10 ppm of chlorine they add so your CYA will increase over time. Until you have at least 30 ppm in the water check the FC every evening and make sure the FC is at least 3 ppm and CC .5 ppm or less. If not shock the pool up to 10 ppm. You can shock with dichlor which will add 9 ppm CYA for every10 ppm FC added BUT stop the dichlor once the CYA tests at 30 or above and start shocking with either bleach (best choice) or cal hypo (will raise calcium hardness and can cloud the water--you must predissolve it for a vinyl pool since it does not dissolve well and if it falls on the liner it can bleach it).

[rjordan390]

Thanks,

Will do as you suggest. I'll have to look into how to shock with ordinary bleach.

[waterbear]

It's not very hard, you just add enough to bring the FC to shock level for your CYA level. Here is a chart that will help you. As far as dosing goes. a gallon of bleach will raise 10k gallonsby approx. the strength of the bleach so 1 gal of 6% bleach will raise a 10 k pool about 6 ppm FC or a 20 k pool about 3 ppm. Likewise, a gallon of 5.25% bleach will raise a 10k pool aboug 5.25 ppm FC and a gallon of 12.5% pool chlorine (same chemical as laundry bleach but sometimes stronger) will raise that same pool by 12.5 ppm FC. Be aware that bleach is not sold in gallons these days. Most common sizes are 96 oz and 184 oz.Also, pool chlorine is sold in 12.5%, 10% and 6% strengths (the latter being identical to 6% laundry bleach.)