Aquatic Plant Forum banner

Maracyn not working on BGA

2840 Views 13 Replies 7 Participants Last post by  icharus
I've been dosing Maracyn for 5 days now (at first at half the recommended dose and in the last 2 days the full dose) but it seems to have no effect on the BGA. I can still see it everywhere and it still looks very green and spreading. I'm pretty sure i didn't buy the wrong meds... the back of the package says it contains 200mg of erythromcin activity.

When it works.. it should turn all the BGA in the tank brown-red right? Seems like everyone else has had results after just 2-3 days.
1 - 4 of 14 Posts
^+1 same here, I suggest full dose, and dose some Nitrogen if you can. BGA is brought about from Chronic low Nitrogen levels. I used a combination of full dose Maracyn and a UV filter. I had a light case and it completely cleared up at the end of the Anti-biotic dosing.
Some also say not the change your filter until the dosing is over.
Me? or Vancat?
In my case, a steady regiment of dosing KN03 every 3 days has resolved it and no signs of returning. It's amazing how fast algae and other pains go away once a fertilizer regiment is installed.
1 - 4 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.