i found it to bright my lights werent inclosed like they are now still got my bits so i could put it back to the way it was 500w for 8hrs
going all sweet for about 4months now
hi duke i have the same light as you but went the other way took my light down to 150s u need 2x new ballast 2x light fittings you may need starters but mine were ok
i have two readings the one earlier is in mS and this one will be in ppt
RODI 0.00
TAP 0.10
I don't know what mS or PPT stand for. i will send them a email