Can anyone tell me the difference between these two acids? The Isocyanuric acid is sold at Menards. It's cheaper than Leslie's acid.
Their MSDS shows:
1,3,5 Triazine-2,4,6 (1H, 3H, 5H)-trione
(Isocyanuric acid)(CAS #108-80-5)
I was starting to get my pool ready to close yesterday when I thought I'd check the light niche for algae. When I pulled the light out the niche belched out this gray brown cloud. The niche was full of this stuff. It was impossible to capture any of it as it just disolved when I tried to collect...