I am wondering if there is a way to check a ballast to see if it starting to wear out? I have a Sunlight Supply 400w hps ballast that just doesn't seem to be as bright any more.I bought it used a couple of years ago so I don't really know how many hours it had been used before.I replace the bulb every 2 grows but to me it just doesn't seem as bright. Is there a way to check it using a multi-meter?Any help will be greatly appreciated.
Peace,
JD
Peace,
JD