90G Upgrade Project

[badfish!]

I've got 2 of the ecoray 60D's on my 90, how high do you have yours? It looks like they may not be high enough? I think mine are hanging about 17" above the top of my tank and I have one purple valida thats still alive, most of my other stuff hasnt survived (could be other reasons) but my softies love it. I've seen the lights mounted higher on other peoples tanks.