just got a new nextgen ballast

so finally upgraded my old magnetic 400 htg ballast to a 600/400 nextgen digital man what a difference in light could just be the extra 200 watts but dont think thats it, but any way ballast isnt super cool little coolier than my magnetic but working well and have a 5 year warrenty plus if my 600 watt bulbs goes out early i can stick a 400 watt bulb in til i can buy and expensive 600

Sounds good, is it still working well for you? I'm looking for a good reliable digital ballast.

Have you noticed any RF interference?

i keep a small fan blowing on my cap, it maybe gets warm, but not really,