I ran across your site and the BBB method several years ago after having problems maintaining my pool. I had been following the advice of my pool store and kept shocking my pool...only to test later and find ZERO FC. Through your site, I found out that the pool store had my CYA through the roof and I couldn't keep the FC in the pool! I fixed the problem, started using the BBB method and never looked back....until this year.
I've had problems with a very light green tint to the pool. Over the past three days, I kept the pH low (around 7) and kept my FC at 26-30. I kept my pool filter running (sand). Three days later and my water looks the same. What am I missing?
I have a 6,000 gal pool. Raised, vinyl liner. I used to use a SWG and liked how the water felt with salt in it. Now I use BBB without SWG but I still put salt in the pool for the feel of the water.
I took my water to the pool store just to compare tests, and see what they would advise. Their "ideals" are way off from what is recommended here. Surprisingly, our test results were pretty close.
Here are my readings today
Pool store says:
CH 27 (they want this to be at 175-225) I don't routinely test CH because I have a vinyl liner. When I questioned them about this, they said that i really DO need to worry about it because it can throw the balance of the pool off and can dry out your skin when it is off. I don't buy it, but wanted to make sure that I'm not crazy.
The FC is low today because I didn't shock yesterday. I decided to stop my shocking until I was able to talk with y'all. I didn't add chlorine yesterday because the three days prior I had been keeping the shock at 26-30 and hadn't seen a lot of results. Rather than keep throwing chemicals in, I wanted some advice. I'd appreciate any input you could give. If you need any more info, please let me know.
PS I use liquid chlorine bleach as my chlorine source.