In the summer, I just reach into the pool, about a foot below water line, and fill up my old Leslies bottle (the only think I ever got there that was useful)....then i bring it inside to test.
BUT -- the water is getting cold and I don't really want to submerge my arm in it......what do you guys use?
BUT -- the water is getting cold and I don't really want to submerge my arm in it......what do you guys use?