What does it mean when the disk starts to get dark?
It is normal for the disk to get darker in color. This actually shows that the disk is working. During the oxidation process the disk will darken as it gets used. If you have more questions visit our website at www.cuzn.com and send us an email. Enjoy your chemical free swimming and bathing. MEGADISK AND MAXIDISK OPERATING INSTRUCTIONS 1) We suggest that, at a minimum, water in a pool or spa circulate for 12 continuous hours at a flow rate of 10 gpm in spas and whatever the normal flow rate is in pools. It will be necessary for all the water to flow through the disk during this time, with no suction occurring other than at the skimmer or wherever the disk should be placed. 2) The disks are self-regulating when it comes to pH. Most of the time they will regulate between 7.6 and 8.0. Occasionally they will hover around 7.4 or 8.2. If you use chemicals to control the pH, the efficiency of the disk drops severely. All of the pH parameters given for “normal” operating conditions are predica
