Cycle by Hagen
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Cycle By Hagen


Rating: 4.8

Average rating from 4 reviews.

(4.8 out of 5, based on 4 reviews)

Providing biologically-active filtration to a new tank is no longer a problem with Cycle! This super-concentrated formula works in freshwater and saltwater aquariums to keep fish healthy. Its all-natural formula is safe for all plants, animals or humans. Because of its biological filter-enhancing nature, it is ideal for use when new fish are added to your system, after medications are administered, or of course for new aquarium setup. Each dose works to reduce dangerous ammonia and nitrate levels in your aquarium as well.
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Reader's Reviews (4)
Erica R.
Rating: 4

Works pretty well

posted 5 years ago

This adds beneficial bacteria, but I like Seachem Stability better.

Pros: Adds Beneficial Bacteria

Cons: Not as good as Seachem Stability

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Rating: 5

Great for new tanks

posted 6 years ago

I use this when I start up a new tank.Works very good.

Pros: easy to use

Cons: none

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