<a href=showthread.php?s=&postid=8377101#post8377101 target=_blank>Originally posted</a> by jimsta
I have the 250w magnetic ballasts and they are perfectly silent....but they do run kinda warm (kinda hot actually). If I was to do it all over I would probably get HQI ballasts if I was going DE since the PAR ratings are USUALLY much better.
.......................I just went and checked results on Sanjays site and almost every bulb got better PAR on the Icecap 400w Electronic than on the HQI ballast. It seems that in 250w bulbs the HQI gets better results but for 400w the electronic gets better results.
So I guess go with electronic all the way!! I just learned something new tonight!