sunlight good or bad?

[kien]

My tank sits in my living room and gets direct sunlight. This would cause that panel of glass to bloom with spectacular algaes quite quickly. I had to close the blinds in my living room to prevent this. However, now I am running nutrient reducing media that works really well (NP BioPellets) so out of curiosity I opened up my blinds again. To my surprise that panel of glass does not get algae blooms anymore. So the cause was one part direct sun and one part nutrients in my tank.

I did/do not notice extra heat in my tank from the direct sun.