Troy, thanks, I sent you a PM.
Christy, that means you have the optimal ballasts for Iwasaki.
Bongy, is it just me or does his tank look dimmer, but bluer, on the right side of the tank ("R" bulb) but the left side looks more intense and whiter (non "R" bulb)?
Tony, I'm really glad you posted that question. I specfically am running the MH/MV ballasts, M58/H37 ballasts. I know that Iwasaki says that you shouldn't run them but they run fine. I am using a pair of non-resistor Iwasaki bulbs and the colour is yellow like toilet pee water...
but when I flick on my 2x110w VHO actinic it's very white.
I am interested in seeing how much whiter Troys "R" bulb will look over my tank. I'm not sure if I can get pictures but this can be a test... I have good eyes!
I posted awhile as to where I could get 250w H37 MV bare ballasts for my lights but I got no response.