i was so interested in giving this a shot that I went ahead and opened some pretty old 19w jobs from HD (commercial electric). I have 2 15w fixtures over my malawi mbuna tank, and since there are no plants and the fish are from deeper waters, I've never really sought after a lot of light on that tank. However, the fixtures are both cheapo magnetic ballast "comes with the tank kit" strip lights. I've noticed that they hum extremely loud (i can hear it over the splashing of the bio wheels in the emperor 400 less than 6 inches away). So I decided this was the perfect application for a very slightly overdriven set of 15w bulbs on electronic ballasts. the bulbs I had were identical in circuitry to the 14w commercial electric in the diagram. it took a little work to get the bulb leads connected, and I would have preferred the insulated wires of the other bulb shown, but I digress. The bulbs were relatively easy to open (took a pipe wrench and gradually increased the pressure until it started to pop a bit. that was enough to loosen the glue and they opened right up with no damage to the electronics. clipped the wires from the bulb and the ac line and wired it up in less that 5 minutes. plugged it in, and with only a 5w increase in power, I could still tell it was brighter. it's no 4x OD, but it works perfectly for my setup. The more important thing, NO hum at all. crisp light, no hum, and INSTANT START! no more flickering for 10 seconds before they start. highly recommended mod if you have the right application and the right tools.
Eheim Pimp #171
55 gallon jungle in progress
; Eheim 2217, TurboTwist UVS, Seachem Onyx / Black T-grade ColorQuartz, 2x55w AHS CF, BeverageFactory.com CO2 Regulator with Clippard accessories
"If you ask me, you've got too much imagination. Everything's all loop-de-loops and flibbertigibbets." - Hank Hill