22 inches... wow...
But don't you have 8,000 watts...

And don't you flower your plants when they are 5 inches tall?

If you get a good amount of air blowing between your lights and your canopy you should have no problem lowering your lights..


22 inches!!!!! Doesn't sound right..

Is that how far away they are when you start growing... and then the plant grows up to the light?