Hello everyone,

We bought a house with an in-ground gunnite pool here in Houston, Texas. The company taking care of the pool just stocked the skimmer with tabs and did nothing else: therefore they no longer work here. After reading the forum, I have the confidence I can get this pool in shape.

After reading the forums I purchased a Taylor K-2006 and here are the readings:

Pool Sample
-FC 3.6 ppm
-CC .6 ppm
-ph 7.9
-Alk 100 ppm
-Hardness 90 ppm
-Cya 100 ppm

Fill Water:
-FC 2.2 ppm
-CC .2 ppm
-ph 7.9
-Alk 240 ppm
-Hardness 40 ppm

Equipment:
-FNS Plus DE filter, 60 sqft, using cellulose fiber
-Chlorinator, Pentair Rainbow Model #320 using 3" trichlor tabs
-30,000 gallons

Questions:
RE: CyA Concentration
Do I need to displace and get CyA down to 60-80 ppm before I try to take care of the CC? How quick does the CyA increase?

RE: Lowering pH
Since my fill water has a pH of 7.9, should I get used to lowering pH with muriatic acid regularly?

RE: Hardness
My hardness is low, and how concerned should I be about this? Should I raise is to 150 ppm?

RE: Scaling
Scaling does exist at the water line, but the low hardness confuses my as to the cause. What would cause the scaling?

Thanks!

Matthew Drew