Join Date: Oct 2010
Location: Victoria, Australia
I would turn your lights off. Malachite green is definitely light sensitive and I am not sure but believe that methylene blue is as well.
Also, some medications don't dye your water extremely dark. My ich medication gives a blue tint at first that gradually fades as it disperses.
Also, always do the full treatment even if it seems like the parasites are falling off. A lot of people stop and think they have cured it and it turns out they haven't and so they get outbreaks later on down the track.