Just got the tf-100 from the delivery man (OH-YEAH!!). Awesome kit.
Here are the results
chlorine results from drop test
CH 160 VINYL POOL
CYA <30 1/4 inch below 30 mark
Water temp. 80
Now to the question. I have some 3" tabs of trichloro-s triazinetrione left over from last season. Can these be used to increase CYA levels to 50. I think that I am going to have to run this pool at at least this level to keep chlorine in it. I have been putting at least a gallon a day in the pool, and about every third day I put in 2. This pool faces east-west and gets full sun all day. No buildings or trees to block the sun. Even on the days when I add 2 gallons the chlorine level never shoots up over 3 or 4, and is back at 2 the next day. I was putting a lot of fresh water in due to a leak, probably 5000 gallons this season, but have not done this in over a week. The pool turned cloudy over the weekend due to high bather load. I put about 1.5 lbs. of 73% cal-hypo in Sunday night along with 4 ozs. of enhancer, and pool cleared up the next day. If it is possible to use the pucks, does anyone know the amount of CYA this will add per puck? Should I just go ahead and buy some sanitizer and be done with it?