yeah lower light i think, see what usually happens when you got the light os far away is they stretch to reach it... hmm acutally i jsut thout about it and i think this applies only to fluoros/cfls and stuff it might not be right for that big ass light you got there :P

but ill leave the top sentence just in case its right lol...

apart form that i think you see the main grow start like 2 weeks old or osmething but i most of yours are past that stage anyway and they look like they are growing fine to me :S

oh yeah keep updating! and good luck