Thanks for the input guys. There is a fan blowing, outside of the pics. It keeps the plants shaking just a little at all times. I will work on covering the top with reflective material to keep the algae out! I have some reflective tape, maybe I can accomplish that today. Seeds are 3 ice, and 3 blackberry. Height is a concern for me, as is having enough lights to penetrate through the canopy. I like the FIM techniques I see on here, but as I plan on keeping all 6 plants in the same TUB, I'm afraid I will quickly overcrowd it? What do you think?