Cyano Control 300g Qium CyanoControl removes cyano bacteria fast and reliabley, without containing antibiotics or other harmful additions. For perfect results please take care of optimal conditions during the treatment. Ensure that filtering and skimming is provided in sufficient quality. Avoid overfeeding. Remove any residue of dissolved cyano bacteria. Control pH and NO3 parameters on a regular base. Do not overdose. During the treatment the aquarium water can become cloudy.