Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
I found knowing the absolute values of lighting makes little difference unless you already have a very stable thriving system. Corals are quite adaptive. I have SSC in two different spots one at about 300 par the other 800 par and it does equally well. Once you reach that stable stage you can move corals around to achieve the result you want. And you will know whether more or less light is better for your system even without the par measurement.