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Use Maracyn I.  Blue Green Algae isn't an algae it is a bacteria called cyanobacteria.  Maracyn's main ingredient is erythromycin which is an antibiotic for gram positive bacteria.  Meaning it will kill off all gram positive bacteria (including the cyanobacteria) and hopefully the gram negative...

So I just started reading the planted tank forums and I also had a ton of green hair algae that just popped up.  Does that mean I am not adding enough nutrients and CO2?  I thought that reducing it would make it harder for the algae to grow but it sounds like that was the opposite of what I...

I do not add CO2--my tank is not fully planted. I have some java fern, a bunch of christmas moss, and some dwarf hairgrass but the tank is still mostly bare bottom.  I have the equipment to do a DIU yeast CO2 injector but I haven't built it yet.  I was thinking I would wait till I have a ton...

Hello!    I have a 20G long aquarium with aquaclear (fluval) 50G filter, sand substrate, live plants & terra cotta decorations, 4 neon tetras & 5 julii corydoras   I have had cyanobacteria for almost a year now.  I didn't realize what it was, and that it was bad until just this spring!  I used...