an engeneer from Radium who have made severale test on american balast tell me the best ballast they found for the radium was the hps400 but I have never see it from my own eye so I realy can't coment on them
this engenier have also tell me pulse start ballast is realy not a good ballast for it
if just2 could bring is ass here with is new HPS ballast I will tell you soon as I have tree brand new radium instaled 1 week ago
I still love my 430 agro and radium combo but maybe we could have a look at those hps 400
By the way Steve did your PAR meter is for sale? it could be very good to have a PAR value also
