I have a metal frame stand for my 40g, and am planning to re-do the ugly DIY light rack I currently have setup. the plan is the zip-tie some pieces of wood to the back legs of the stand and have clamp lamps attached to them.. should I worry about any structural problems with that setup? the (fairly minimal) weight of the lamps would be supported by the two back legs, if that makes any sense, and held in place by plastic zip-ties.