I had Cayno Problems too, I attached a Picture so you could see the red line on the far end of the tank.... I would use the Article like everyone has suggested.... If you are running tap water its not fun you would need an RO
system also suggested by the others. I just wanted to share my expirence with you on this issue. If you are using Tap Water your in for a ride as for me right now I am fighting with Cayno and Diatoms also every other week as I to need and RO
system. You can read about RO
to give you a better understanding. If you follow the rules they provided for you, you shouldn't have any problems getting ride of it....