alge

first tank, 25 gallon bio cube. new algae bloom no idea what to do any info would be great.

I seem to be growing some kind of green velvet alge wherever light intensity is at the highest. Looks like it’s turning into coralline?Should I leave it be or try to fix it? Any input good or bad is welcome and highly valued. Tests taken before water change. No2-0.05, ammonia-0, ph-8.2, no3-2...

Is this good?

Acquired the unit in a tank buy and don't need it as I already have one on my tank. The unit and lights look lightly used but in good condition. I did connect the lights only to ensure they work. The lid hinges have been broken but shouldn't effect the operation of the unit. Asking 280 obo that...