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The FMR 75 has a non return valve supplied separately which can be used or not
Enhances water oxygenation through surface movement
Pondopress filter hosetails x 2
Trust Tetra for a balanced approach to aquatic care year-round
These spheres are ideal for use in various filtration systems including sumps
JBL BioNitratEx Biological Filter Enhanced Media vitalis The FMR 75 has aIf you dont get anything to eat youll starve to death: Nitrates and phosphates form main nutrients for algae. If one or both nutrients are withdrawn from the water, the algae will stop growing! However, bacteria only break down nitrate under specific conditions: Only when there is no longer any oxygen, but there is a carbon source (a nutrient for bacteria) available do the bacteria remove the oxygen from the nitrate, thus breaking it down. Thats how