What does Birm filter media mean in practice?
Birmium catalyzes the reaction of dissolved oxygen with iron, and the resulting precipitate is retained in the layer and removed by rinsing.
When does it matter?
Requires appropriate pH and oxygen; hydrogen sulphide, oils, polyphosphates and some reducers may interfere with its operation.
Which solutions are related to it?
Before selection, the current medium card and full analysis are checked, and the reverse flow is adjusted to the reservoir expansion.