Xref: 127.0.0.1 rec.aquaria.freshwater.misc:136791 rec.aquaria.freshwater.plants:65178

Mark Trueman wrote:

Is it likely that dosing PMDD may help with my problem of BBA? Ive got a
160litre tank, dosing iron and potassium every other day (25ml of the
fertiliser which contains .1% iron), diy Co2 at about 20ppm, 120 watts of
6500k lighting, using a nitrate and phosphate filter on my tap water and
Rowaphos in my tank (about 10ppm nitrate) Im getting BBA on most of my slow
growing plants and on the tops of my vallis. Im also getting the odd bit of
green hair algae on glass and rocks and plants.

In my tank, BBA seemed to disappear when I got my nitrate up from below 5ppm to
about 10ppm. Hair algae tends to appear when my Iron is too high. Your mileage
may vary.