CH--can it fall that fast?

[Maria]

Here are my test results with my new TF-100:
FC 5
CC 0
TC 5
pH 7.3
T/A 120
CH 150 (we have copper that DH added, so I added the two extra R-0012 drops prior to R0011L and included them)
CYA 40
Temp 70

On 5/25, the last time tested (at Leslie's Pool Supplies using a drop test) the CH was noted at 210. Is it possible for CH to drop that fast?

Is my FC too low for my CYA?

The pool has a solar blanket on it now until this weekend when we are ready to use it and the temp is going up to the nineties!!!

 

[duraleigh]

Hi, Maria,

My intial reaction to your results is that they are nearly perfect! :lol: :lol:

How does your water look?

Do you have a gunite or a vinyl pool?

Ch is generally stable in pools so I would suspect a testing error on Leslie's part. Over and over, we have all learned that we test more accurately than the pool store.

 

[Maria]

It's a gunite pool.

The water was GREEN and sludgy but thanks to all the help here it's clear and bright, ready for summer fun.

 

[duraleigh]

For a gunite pool, CH is a little low.....200-400 is better.....I'd add a little to bring it up but maybe test it once more to confirm your first test.

Again, the rest of your numbers are absolutely on the money....Nice work! :lol: