A few days ago a growing friend gave me his old 400watt MH hydrofarm grow light with a built in ballast. So I went out and bought a 400watt MH light that fits the requirements listed on the growlight. Now when I went to turn on the light it didn't come on right away, which I wasn't worried as I've heard it can take up to 5mins. But after 10mins it never came on, same after 30mins and a hour. I checked the bulb while it was in and turned on and inside the middle part there was like a little flicker that looked like it was trying to ignite the bulb and get it lit up, however it never came on. Now Im wondering if its the bulb that has something wrong with it, or if its the grow light its self? Any help would be much app as my buddy is not around to answer my question.
Kwali Reviewed by Kwali on . Question about MH lighting A few days ago a growing friend gave me his old 400watt MH hydrofarm grow light with a built in ballast. So I went out and bought a 400watt MH light that fits the requirements listed on the growlight. Now when I went to turn on the light it didn't come on right away, which I wasn't worried as I've heard it can take up to 5mins. But after 10mins it never came on, same after 30mins and a hour. I checked the bulb while it was in and turned on and inside the middle part there was like a little Rating: 5