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Mardel Maracyn

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$ 49.00 until FREE shipping


Maracyn's active ingredient is Erythromycin. The savings come in the large 24 pack or larger over the traditional API Erythromycin. Each packet treats 10 gallons.

Don't confuse this with Maracyn 2, which isn't the same we don't currently carry.

Customer Reviews

Based on 31 reviews
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S
S.W.
Big thanks to Aquarium Co-Op

Works great. Shout out to Aquarium Co-Op for all their testing and finding great products. Keep the trio in your fishroom!

W
W.R.T.

Always helpful and will spend the time to get it right.

R
R.K.
Ronald.krchnavy@gmail.com

This product was effective in clearing my 75 gallon tank of blue green algae. It is a less expensive option over API Erythromycin.

R
R.Q.
Maracyn Fails

Bought 2 boxes of 24 count@$19.99 each. Lot # 1509, Exp. Date: 05/30/22. Used as directed to treat body fungus on Platties. Did not eliminate fungus. Product boxes advertised “Fish Care Brochure Inside” which was missing from both
boxes, this may have been useful for diagnosing and treatment. Medication packets can trap product if not fully shaken down and expanded before tearing open. Generally unconvinced product is effective or worth the cost.
I have been keeping tropical fish and aquariums since 1970.

S
S.W.
Just in case

Bought this to have on hand 'cause ya just never know.