I bought a light system (reflector bulb ballast) from them had to wait an extra two weeks for the ballast understandable.When I plugged the ballast in it was making a loud buzzing noise, I was concerned about the noise so I looked in the book that came with it.It said some ballasts make a loud humming noise and if its making excessive noise to have it checked out.I emailed igrowhydro my concern their response was some ballasts make a lot of noise and I should consider upgrading to a digital ballast.So I called the manufacturer (sun light... read full review »