Hi,
My tank had been set up for about 7-8 months now. I've first noticed this algae about a month ago. It looks black, but when i like really close it has a purplish shine to it. It is appearing on my driftwood and on a coconut shell i have in there. It's not growing on the glass. They're all small dots.
I have 15W of lighting over this tank (20 gallon). 0.75w/gal
I add no ferts and do 10% water change twice a week.
Anyone knows what this is? Is it harmfull? if not, i'll just let it be, it isn't annoying me yet.
TIA,
Thomas
My tank had been set up for about 7-8 months now. I've first noticed this algae about a month ago. It looks black, but when i like really close it has a purplish shine to it. It is appearing on my driftwood and on a coconut shell i have in there. It's not growing on the glass. They're all small dots.
I have 15W of lighting over this tank (20 gallon). 0.75w/gal
I add no ferts and do 10% water change twice a week.
Anyone knows what this is? Is it harmfull? if not, i'll just let it be, it isn't annoying me yet.
TIA,
Thomas