I ended up keeping both lights for a total of 28w. Not bad for around $35 bucks. I dont think its going to avoid all algae growth in my display, but it is going to make a way bigger difference than the 4w finnex fugeray that came with my HOB refugium.
So far my chaeto looks healthier than ever. I no longer find the need to use GFO as it just slows the growth of my chaeto and is money down the drain. I will keep some GFO handy in case my phosphates get out of control though.
All in all, i am happy with this light. If you have a small refugium or need a light with a small footprint, i would recommend this for the price. There are definitely better lights out there, but i believe this to be excellent value.