Hi, Noob here to the BBB method but after a week I love it. I've managed to get my chlorine stabelized and am adding a little bit of bleach each morning to maintain a level of 4. Initially before starting this method we had a pool guy that hadn't checked the water in about a year. it was always crystal clear so we never thought to do it ourselfs until our eyes started burning and the copper pipes started to erode and spring leaks on our filtration system. After testing initially the ph was a yellow color similar to the chlorine reading and my test kit didnt go that low to get a number reading. I went to a pool store and bought a big bottle of ph-up dumped it all in and the water turned a milky blue. ph did not improve so I started researching and found the bbb method. since then I have added 9, 4lb boxes of 20 mule team borax (one a day) and the ph is slowly rising as of this morning it is registering a 6.8 on my test kit. I have a couple questions....
Pool specs are: 19k gallons in ground D.E. filters and pool has a spray on fiberglass liner.
1.) is adding that much borax harmful to the pool or filtration system and is it ok to swim in?
2.) since yesterday I have been increasing the amount I am adding to two boxes a day, once in the AM and once in the PM is that ok or too much too fast?
3.) the water is crystal clear as of this morning, but ever since I started increasing the ph I have been getting a blue residue on the bottom of the pool every day which I vacuum up each evening. I am adding the borax to a bucket of water, dissolving it completely, and dumping it into the spa which then goes through the filters and into the pool. so not sure what the blue residue is.
4.) I cleaned my filters out yesterday and they had a layer of blue turquoise sludge covering them is that normal and how often should I be cleaning them while adding this much borax?
BTW I am currently using the cheap walmart test kit so I ordered the BBB recommended test kit and am expecting it to arrive early next week
any help or advice is much appreciated.