Quote Originally Posted by Pappy View Post
If your CYA is really 200 ppm, you will need to dilute your pool water to get readable results. Carefully measure and mix 1 cup of pool water with 1 cup of tap (your drinking water will have no CYA in it) or distilled water. Double the reading you get. You may need to add 2 cups of tap/distilled water to 1 cup pool water to get a useful reading, if so, multiply the reading by 3. There are some videos on the test kit you should watch before you start testing. I don't have the links right now, but I'll find them.


Are you going to do a complete drain and refill? If you're doing a partial drain & refill, you don't need the dichlor. If your pool's pH tends to drift down, like mine, you may never need MA.

Pappy
Today I have received my Taylor K2006 test kit I bought from Amazon.
I have tested the CYA levels. On a 50% diluted sample (as suggested by Pappy) CYA Level was 100 which corresponds to 200.

Looks like HTH machine result is confirmed. I decided to go ahead drain the pool. Both chlorine and ph and bromium levels are high too as I was adding 10 % bleach to get rid of the algae in any case.

So tomorrow is the big day. Will discharge the pool, power wash and fill up. For a 10,000 gal pool to bring the CYA levels to required 50 ppm what do I need to do ?

I still have some 3 inch trichlor tablets if I am to use them approximately how many tablets I would need before switching to use bleach? Is there a rule of thumb ? Or shall I hold off using tablets and start with bleach or some other product ?