Greetings. Brand new Forum member here! Kept coming across this site and read over the pool school and am convinced to switch from tri-chlor tablets and weekly liquid "shocks" to the BBB method described here. We're currently working against a black algae bloom and can't keep any FC level. Been using the trichlor all summer since we moved in March. I'm pretty sure my CYA and CH are above range, and my PH has been at or below 7.0 for some time no matter how much PH Up I put in-I am attributing both to the tri-chlor?. Nevertheless I'm heading to town tomorrow and will get the pool store test my water (ordered my own TF-100 kit this afternoon, currently have a K-1004 test kit). In a blind attempt to simulate a SLAM (or at least keep some FC levels above 5 to try to keep algae in check), I put a gallon and a half of liquid chlorine from Pinch-a-penny in after steel brushing the pool. This morning a gallon, and tonight a gallon. The whole time since brushing it's been 5+ according to my K-1004 kit. Pool has been clear this whole time, though it clouded up a little bit with the brushing. I've increased pump time pretty much for 24 hours now to keep circulation going and clear up the water.
As I mentioned, I'm a relatively new pool owner and definitely new to BBB. My first question is regarding buying the right liquid chlorine. Can I use Pinch-a-penny jugs at $5.80? per 2.5 gallons (10 or 12.5%?)? I thought I read somewhere that adds to CH which bad? Or must household bleach be used which is more pricey around here at $2.80-3.33 for a little less than a gallon (8%)? It's looking like I will be going through a lot at first trying to get the pool back in check...
I will of course post results when I get them tomorrow. Looking forward to the new test kit and the BBB and getting back in the pool.
Thanks in advance!