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Is Maracyn the only anti-biotic that kills Blue Green Algae? I have a bad BGA problem and I already have some Maracyn-TC on hand but I don't know if that will work.
 

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The actual medication that is recommended for BGA is Erythromycin. Maracyn is just a trade name for that. Maracyn-TC is actually tetracycline. That's a whole different class of antibiotic. It might work, but personally, I'd stick with E-mycin.

It works pretty well at lower than the usual recommended dose too. I dosed about 10mg/gallon (the usual dose is 250mg/10 gallongs) and it worked beautifully after only 2 doses.
 
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