I moved into a new home with my first pool in May. Around June/July I started to have problems with keeping my numbers within range. After reading on here a good deal and buying a DPD test kit, I slammed the pool and had it looking alright. In the last couple weeks it's been creeping back towards green. I used a Flocculant to see if that could help get some of the fine dust and debris out after a number of storms came through town. TC was around 3 and CC was less than .5. On 9/6/15, I put in about 1.5 lbs of Sodium Dichloro in the pool that's right around 15,000 gallons. That put the TC to 7.5. Now, 5 days later here are my numbers:
I'd love to avoid draining half the pool if at all possible, but I just wanted to check and see if there was any other hope for me to bring down the CYA and CH another way.
Any my help is greatly appreciated!