Grotech ReefClear RC 500ml

Application:
Before use shake well for 30 sec. and admit immediately thereafter directly into the streaming of the aquarium. 
Switch off the skimmer for 1 hour. After the addition it comes to a water turbidity which, depending upon water 
pollution will hold on for 2 - 12 hours.
Afterwards is the aquarium water crystal clear. 
Application should be repeated every 3-4 weeks.

Dosing: 
10 ml to 30 litres aquarium water