Ain't no sunshine...

A quick word on the small algae problem I'm experiencing. There's some brownish algae growing on the glass panels, mainly on the front and back. I'm almost 100% positive that the biggest reason for this is direct sunlight. The reasoning being that the area infested by the algae stops in a really straight line 1/3 from the top of the tank. The same line continues on the filters too! It seems I have to be more careful with the curtains, as the warm spring sunlight obviously hits the tank at some point of the day.

I'll scrape the visible algae off next time I change the water. That way the fluff wont remain in the tank and mess up the sand.

I also fiddled with the direction of the flow once again. Now the right hand side filter points left, a bit to the back glass and slightly down. The left hand side filter (U4, lower nozzle) points diagonally up and to the right. The CO2 contraption shoots to front and right, and is pointed to the lower part in the middle of the front glass. I'm hoping to get good circulation all over the tank, at least there's plant movement in all areas so there's hope that CO2 and nutrients are spread, if not evenly, at least to all corners of the tank. There's also sufficent surface agitation, so the exchange of gasses should also be in check, but without the fear of losing too much CO2.