Yeah, technically I shouldn't need to use a fan but I'm thinking I might just place a large circular fan above both of them - not a computer fan but standard 12" oscillating.
CREEs are definitely expensive as well. 200w of Chinese crap is costing me $150 but 200w of CREE would be $700+. One day perhaps I'll make a tiny tiny CREE array for like a 1x1 box Would still be fun.
Thanks midwest re the planted tanks. Those strains sound great. I'm a bit jealous as I tend to run the same stuff over and over again.