"Can Be Used In Addition To The Zeovit® System, Especially When Starting With The Zeovit® Method. Removes Yellowing Compounds And Cloudiness In A Biological Way. Recommended In Any Tank System. Reduces Nitrate And Phosphate When Used Regularily. Dose Directly Into The Tank. Switch Off Skimmer For About 1 H If Possible. We Recommend Dosing After Water Changes Or Against Problems In Your Tank. 1000 Ml For 5000 L / 1250 Gallons Water."