jbj 28 nano hqi problem

[reefer4eva]

im really praying that someone here can help..i have a 28 jbj nano with a nanotuners hood i just replaced all the bulbs(even the led moonlights)i have a powerpac 150w 14000k metal halide and 2 coralife pc actinic 03 bulbs,my problem is the metal halide bulb stays on for a few minutes then flickers and goes off..then a buzzing sound starts ...the bulb goes back on,few minutes later flickers and goes off...then repeats this all day...is it the bulb?the gear box?the ballist?someone please help before i throw this hood out the window!!!

 

[ReefnQueens]

My best guess would be the ballast.... I'm having the same problem with 2 out of 10 t5 bulbs on 5 ballasts but I have 8 other bulbs running so I'm in no rush....good luck