I've ordered my test kit but haven't received it yet(UPS says July 5). Anyway, using a 5 way test strip from Walmart, I have the following readings: CL=0, PH = 6.8, ALK = 80, hardness = 400, & CYA is mostly bright yellow but has a brown center on the strip which is supposed to be 30-50. I found some green algae last night in cracks around the water returns and the steps. I brushed it all off. The water is still clear. I have a 3" tab feeder that still has tablets in it. I need to get CL & PH up but don't know the best way to go about it. I don't want it to turn green before I get my test kit and figure out exactly where I'm at. At what PH level(and everything else too) should we stop swimming in it?