Is there a way other than draining thousands of gallons of water from my pool to lower my CYA? My water is very clear but I have never been able to get my CYA levels in range. I don't go through an abnormal amount of chlorine so I don't know if I should be too concerned or if my testing is flawed. All of my other readings are within range. My CYA is the only thing that I have trouble getting within limits. Thanks.