Rena No Algae Two Doses

The Rena Crystal 2 Dose No Algae Cartridge is a simple product for use with the Aqualife 100, SuperClean 120 & 150 the Filstar IV3 & IV4 and the Bio3 50

Effectively prevents the growth of undesirable algae in the aquarium.

Contains Nitra Zorb (to help eliminate nitrates, ammonia and nitrites) and Phos Zorb (to help eliminate phosphates and silicates. Both of these also prevent the proliferation of undesirable algae growth and diatoms.