Actually its 24H. I,m in agreement with what others say. Except for 400,s. I doubt I will go back to them.
However if you read the portion where I was talking with myself,
, I mentioned 250 par issues. Most stink, unless using 10K. And the 10K barely out performs the Iwasaki in the 175w version and gives the same colour.
I suppose some of the DE bulbs would perhaps do better but my preference is SE. Crap, when I look at the charts now, the 250 I use to run, is only half the par or the same bulb but in 10K and a bit more than half of the Iwasaki bulb.
I was looking up 250w Radiums but they would require overdriving to have enough output. I,m on the hunt for one of Steves old posts on them.