Pellet filter vs. vodka method
For the synthesis of biomass, some heterotrophic bacteria take up nitrate and phosphate from the environment. However, to do this they need a carbon source in addition to a nitrogen and phosphorus source. This fact is taken advantage of in the vodka method or in the operation of a pellet filter.

Unlike the vodka method, where the carbon is added in liquid form, with the so-called bacteria pellets it is present in solid form. The pellets consist mainly of biopolymers, which can be gradually broken down by the heterotrophic bacteria. This means that the bacteria only receive the amount of carbon they actually need for their growth. The operation of a pellet filter is less labour-intensive, safer and easier to dose than the vodka method.

Application notes NP-Bacto-Pellets
Before use, brew the pellets once with boiling water to force the air out of the pellets. In case of increased nutrient levels, the outlet of the fluidised bed filter should be close to the inlet of the skimmer. In this way, the resulting bacterial biomass (including built-in nitrates and phosphates) is effectively removed from the system. Keep in mind that it will take some time to establish a bacteria population inside the pellet filter. A solid supply of trace elements creates the best conditions for this.

Dosage

NP-Bacto pellets are good if you want to lower your nutrients slowly. If you have an urgent nutrient problem, other products such as NP-Bacto-Balance or Elimi-NP are more suitable. However, these products can also be used in combination.