I got a 12v 1.5a plug from radio shack. The fans are way to loud now. I was going to use the new plug for 3 fans on the bulbs. I went back and used the 12v 200ma plug with 3 fans. As long as my tank stays below 82 I will stick with these fans. If the temps rise I will probably buy a plug that adjust the volts. That way I can slow them down if they are too loud.