"Pszemol" wrote in message
...
It was too soon to buy any fish... feeding the fish you are fueling algae.

Hold on buying other fish or any other "grazer" until you identify the
alga.

Tangs do not particularly eat green hair algae - it does not taste good.

Man! You are really dedicated!

They prefer eating more ornamental macroalgae, the ones you would
not mind having in the tank...

The best grazer for hair algae I find tuxedo urchin, but the problem
with them is that they die of starvation when the algae is gone...
Other urchin - black long spine one should eat it, too but I am not
sure - never had one - they grow too big for my tank...

The best way to get rid of green hair algae is to starve the new tank
to let all the result of cycling processed to nitrogen by DSB.
To speed up starvation mechanically scrub algae from time
to time by removing rocks outside of tank - this way you do not
let scrubbed algae pieces go back to the system...
Also, make sure you have sump sock to catch all the pieces
your hermits will cut from the rock and not eat...

I would keep the tank unfed for a long time before buing a fish,
but you have already got one, so it will be tough...

What are your current levels of nitrates, phosphates, alkalinity and pH?