maximum height for a diy stand?

[lastlight]

my tank bottom is 43" from the floor. It's tall but so am I. I have long arms and still have a foldout ladder for the tank that i tuck between it and the wall.

I have tons of space for equipment and with the open top and pendant...there is absolutely no light spill/glare even with 12 t5 bulbs because the waterline is between everyone's eyes and the bulbs.