I made a 4 outlet controller from a Siemens Logo I got off Ebay really cheap. They are pretty much infinately adjustable and programable relays. 4 outputs, I switch my 3 MH, 2 on then the middle on 30 min later, and off in sequence too. And I got moonlights, 11pm-3:30AM. And a fan on a timer.
All depends on how DIY do you want to get, and what all do you want it to do. My setup cost me $70, including plugs and 4 11/16" elec box and cover.
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Dan Pesonen
Umm, a tank or 5
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