You read the sentence but did not understand what it said. Those 2 simple comments made all the difference in the world to myself and many others:
Once you understand this, then algae is a minor issue. Many aquarist want a pill to kill the algae, not learn to grow better plants. This hobby is about growing plants, not killing algae. So the focus should be there. Algae is diagnostic, but only as a more problematic plant growth issue.
So either way, the focus is on the plants.
Glutaraldehyde can be used at normal dosing if you spot treat. I do not use it, only as a spray on wood if it gets infested and I know I need to look at CO2 as the root issue.
H2O2 seems to work well if not better and is MUCH cheaper than any source of glutaraldehyde. You can also be hyper aggressive with H2O2 and apply 2-3x a day with a few hours in between.
Always turn water flow off for a minute or two before applying.
Then wait about 5 min, then resume.
You have a CO2 issue if you have BBA on plants, no algae treatment will cure that.
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
i am one of those many others.
almost every one of my tanks has gone through a period where BBA is growing in the beginning until i figure out how to balance my lighting and CO2. then it goes away (i usually speed the process up by spot dosing, but that alone will not make it stay away).
make sure you have good CO2, good flow (to distribute the CO2), good fertz, and not too-high lighting.
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