My pool water looks green, don't know if its algae however, when i brush then can see brown dust in the water. Anyway decided to slam and the question i've is about Clorine/CYA chart here: Pool School - Chlorine / CYA Chart
My FC is 0 and Cya 50 so, based on the chart should i traget shock FC 20? What's shock FC? does it mean i need to bring my FC level to 20? If yes, then how would i test FC of 20? I ordered test kit from this site and i don't think it can test that high level of FC. So, can someone help?
My FC is 0 and Cya 50 so, based on the chart should i traget shock FC 20? What's shock FC? does it mean i need to bring my FC level to 20? If yes, then how would i test FC of 20? I ordered test kit from this site and i don't think it can test that high level of FC. So, can someone help?