I have had an algae problem for about a week now. I just got my Taylor K-2006 Test Kit yesterday. (You guys were right, pool store said they had one in stock, got there and it was a K-2005 DPD kit).
I have been using chlorine pucks on a regular basis and Pool Time 6-in-1 shock on a weekly basis. I did not discover your forum until 4 days ago, so, when the algae started getting bad, I added, and continued to add the Pool Time shock.....WRONG, I now know!?##!?
I had to rely on test strips up until yesterday, and they were showing my CYA level at about 150, with no FC, and a ph of about 6.8. I brought the ph up to 7.2 and have been adding 4-5 gallons of 10% liquid chlorine every evening, brushing and vacuuming a lot, and running the pump 24 hrs a day, keeping the filters clean. This has improved the algae situation.
Now that I have the test kit, I can make better use of the pool calculator.
Last night at 6:30 my test results were:
FC - .6 ppm
CC - .6 ppm
CYA - 200'ish guesstimate (the tube markings only go to 100, the black dot disappeared after about 1/2" of water added to tube). BAD
CH - 1100
ph - 6.2
TA - 100
I added 4.5 gallons of 10% chlorine
I did not have anything to bring the ph level up (????? is the reading even correct if I've been adding 4-5 gallons of chlorine everyday and with the current readings, below, do I need to be concerned about ph right now)?
This morning at 6:30 my test results were:
FC - 24ppm
CC - .4 ppm
Do I need to even test the ph & TA during this process?
The algae problem is slowly improving.
OK........so finally, here is my question:
Obviously, I need to drain the pool. (RO is out of the question, because the two RO companies are backed up until mid-July). I live inland in San Diego and the high is about 88 degrees. If I drain the pool and re-fill it, am I at a pretty high risk of damaging the plaster? Even if I rent a pump and drain quickly, it will still take about 36 hours to refill.
I read in one of the other threads something about "draining from bottom and adding water to top". ?????????
Any advice from you wonderful pros would be greatly appreciated.