One of my Coralife ballasts is bussing/humming to a point of being obnoxious.
I assume there is no way to repair these ballasts?
In looking for a new ballast, I found these 2:
1. 150/175 watt Single Electronic Ballast- Coralvue
2. ARO Electronic Ballast-150/175W MH
The 1'st one looks very similar to my origional magnetic ballast, the 2nd one looks alot more compact. Not sure why the drastic size difference? I know the meganetic ones are typically larger, but the electronic ballasts are usually smaller. The 3rd is nice because it is selectable between 150w/250w.
Anyway, I know someone on here before said a megnetic ballast will drive the bulbs better? While I don't really understand that, I really would rather not go with a megnetic ballast for several reasons, Heat, noise/buzz are the primary reasons.
Can anyone suggest one of the above ballasts and/or another one for replacing my OEM ballasts?
Also If I were to get the 3rd one that's selectable, what would it take to change to 250w HQI's? Just change the bulb, or do I have to change wireing/sockets?