The Planted Tank Forum - View Single Post - BBA is killing me! Thinking about going low-tech because of it
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Old 01-03-2013, 12:53 AM   #32
@marko@
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Quote:
Originally Posted by shinycard255 View Post
If there were a pill to kill all algae, that would be a miracle, but I don't see that happening. I have quite a few plants that grow like weeds in my tank, while others don't grow as fast

I've only done H2O2 as a tap/h2o2 solution out of the tank in a 5g bucket as a dip, but never as spot treating.

So how can I treat my CO2 issue to get rid of the BBA? My DC is yellow, I changed flow up a bit (it might have been that, but not sure), EI dosing, and have around 50PAR of light at the substrate



This tank has bad BBA in it for the past few months. Balance light and CO2? I thought BBA comes from the fluctuation of CO2 in the water, not the lighting?

(sorry for duplicating my answer, but I said the same thing up above to Tom)
My DC is yellow, I changed flow up a bit (it might have been that, but not sure), EI dosing, and have around 50PAR of light at the substrate
bba comes from CO2 problems, yes. but whether it can be a sign of CO2 flux, or overall insufficiency, i cant say; probably both induce it equally well.
light drive CO2 need. the more light you have, the more CO2 you need. its a balancing act.
i do not use a drop checker. used to, but then trashed it. i used to keep it green in my ADA 30C, and my CO2 was not high enough (my tank had a ph of 6.7 at that time). then i turned up the CO2 til it turned yellow and my tank had a ph of 6.2 (i keep mentioning ph cuz i keep my CO2 on a ph controller, and can indicate how much more im putting relative to the previous value). but i still had some CO2 problems, including BBA. a while later, i removed the drop checker and started paying attention to my plants instead to see what they say.
got the tank to this (with a ph of 5.4):


the drop checker was giving me a false answer. its not the best tool in the world.
but look at the other part of the picture. that tank used to have BBA problems, and it was saved.
good CO2, flow, and nutrients to encourage plant vigor and halt BBA growth, and some occasional excel to kill what BBA was still there was all it took. simple, but only in retrospect.
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