Great MH ballast

Discussion in 'Grow Room Design/Setup' started by NdicaBud, May 8, 2002.

  1. This is a pic of the type of MH 400w ballasts that I use,when I use them. This ballast is quiet,and has no audible hum,,it is an outdoor ballast,waterproof,and contains 2 400w MH ballasts to run 2 bulbs. Since it is an outdoor ballast,it needs to keep cool when used indoor,,this was solved by placing upside down in a bucket of water,,which also helps keep steady humidity in the area....proved a very good investment. As you can see I merely mounted a gangbox ,and duplex to allow plug in lamp leads....

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