Switching from MH to T5?

[i have crabs]

i say add a 3rd 250w with some t5s aninics or fji purples if thier is room.
if i had a 24" tall tank or shorter i think id keep the t5's i bought but im not satisfied with what i see from my corals, it would be good if someone had a lux meter and a par meter so we could test a bunch of set ups and actually have some numbers to judge things from instead of the same old argument.
i know i have other things to spend $500 on right now though,

heres a lilttle read about par even though its just about mh's