Difference between HQI, EYE, standard, and electric ballasts

[Aquattro]

Josh, again, we'll need to know which bulb. A 65k Iwasaki needs the EYE ballast, others can use the standard M58 and a DE needs the HQI.

As for what I'd run if money was no object, I'd probably go with a mixture of 10k and 20k 400W