ZEObak

The essential microorganism solution for a healthy, well-balanced and efficient bacterial fauna in a tank. ZEObak contains several bacterial strains  building up bacteria plankton (also in combination with ZEOfood and ZEOstart). Bacteria plankton is absorbed by many corals.

The Probiotic Method by Korallenzucht.de:

It's a simple method of obtaining a low nutrient environment in your reef aquarium with a tiny addition of special bacteria. These bacteria consume nitrate and phosphate from the aquarium water, managing the levels in your aquarium and locking those nutrients up into biomass and bacterioplankton. The bacterioplankton is a highly nutritious and natural source of food for your corals and can be removed via efficient protein skimming. It is scalable and can be tailored to your specific aquarium based on the desired level of nutrients available in the water.

Dose 1 drop per 25 gallons/100 L once or twice a week, depending on tank stocking. Dose directly into the tank.

ZEObak shelf life 3 years.