Lux & light & Mothers

quick question. I have bought a lux meter off ebay, I have 7 20w cfl (700w equiv) . What I want to know what is enough Lux ( reading on the meter) to grow and maintain 2 mothers?????

BUMP
i would like to know the answer too..

dump...................

Plants can't actually see lux. It's a measurement designed for the human eye.
They see PAR.
140 watts of cfl should be cool for a couple of moms.

Ahhhhh I read that, Im aware the lux is for us lesser speceies. Just wanted to know if any1 had any ideas

This becomes complicated when measuring multiple points of lighting. I don't think the meter will answer your question. Trial and Error, here, I believe.