Newbie 75 gallon

[Llorgon]

I ended up getting some cereal containers at Walmart. Works great so far!

As for the tank, it's doing ok. I am battling some algae. Hoping someone here can help me figure out what's causing it. Below is a picture of what I am dealing with.

My params are
Temp: 80
Salinity: 1.026
pH: 8.3
Ammonia: 0
Nitrite: 0
Nitrate: 0
Phosphates: 0
Alkalinity: 8.2
Calcium: 440
Magnesium: 1410

I have a protein skimmer running, chaeto in the sump with a light that comes on opposite to the display tank lights, feed once a day 1/4 cube of mysis or some pellets.

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