Siphon off as much of the cyanobacteria as possible before the first application. Dose 50 ml per 100 l (26 US-gal.) water volume and turn off skimmer and UV-C devices for about 2 hours. Repeat the dosing on the 3rd and 5th day after the first application and siphon off any cyanobacteria deposits again beforehand. After a short period of cloudiness, the aquarium water becomes extremely clear.
Important: Shake the bottle well before use!