How did you suspend you MH lights over your tank

[mark]

I built a canopy then screwed my pendants to it.

Realize that wasn't much help but for height, when building my canopy I wanted to keep it low. I contact a couple of companies for height and from Hamilton for their Reefstar pendants they recommended 8" above water, from PFO and their mini-pendants they said 5 ". I had indicated was planning 250W DE pendants.