Screw-in bulb or double ended bulb for a 150w metal halide ballast?

Mykiss · #1 03-23-2007, 06:47 AM

I've got a 150 watt ballast for a metal halide fixture and it's originally for a 'screw-in' bulb. The only thing is that there's not a lot of 150 watt screw-in bulbs rated for ~14000K

My question is, can I remove the screw-in socket and replace it with an HQI double ended sockets?

The reason I want them to be double ended is that there's a lot more double ended bulbs with ~14000K rating in the 150 watt.

Thanks

Mykiss · #2 03-23-2007, 07:18 AM

Oh, and it's a magnetic ballast

Veng68 · #3 03-23-2007, 08:36 AM

look at the ANSI number on the ballast....... it should say M81 for 150 watt.

I don't think a regular magnetic ballast would work for double ended.

Cheers,
Vic [veng68]

Robw · #4 03-23-2007, 01:48 PM

Here is a good read about ballasts and MH lights. Answered a lot of questions for me.

http://www.reefkeeping.com/issues/2007-03/sj/index.php

Mykiss · #5 03-23-2007, 02:41 PM

thanks!
I'll give it a read.

KrazyKuch · #6 03-23-2007, 04:46 PM

If it says it's a M81 then yes but if it says M107 then no

Mykiss · #7 03-23-2007, 06:12 PM

thanks Kevin. I'll checkit out tonight.