Dear friends!
I've discovered the source of my algae outbreak! Damn! I'm really angry now! The rock, I bought from some on-line German FS releases silica! Aghbghg %^#$%^#$% ! I had approx 45lbs of it in my tank! I've kicked out everything ! I'm really unhappy! I wanted to be mr. smart ass and seed this rock with coraline alagae from few small pieces of fine quality LR... And now... My tank looks like a deserted sump...

with lots of revolting hair algae! Instead of planned purchuase of RO/DI unit I have to buy some cheap LR now... What a terrible day...