Makes tap water safe for fish by immediately neutralising harmful substances.
Creates a biologically active environment to allow the fast introduction of fish into a newly set up aquarium.
Reduces the number of water changes and stabilises important water values for up to 6 months.
Tetra CrystalWater cleans dirt particles from the aquarium water fast, safely and reliably. For crystal clear aquarium water.
Tetra NitrateMinus reduces the algae nutrient nitrate (NO3-) reliably and in a natural way.
Quick remedy for high phosphate values (PO4).