View Full Version : Changing ballast and bulbs

10/03/2010, 12:29 AM
If I replaced the ballast and bulb in this setup with a 250 watt ballast and bulb, basically just using the hqi fixture, would there be any problems?

Link to 150 watt setup:
link (http://www.aqua-medic.com/oceanlight_pendant.shtml)

10/03/2010, 07:13 PM

10/03/2010, 08:35 PM
The de halides use different sockets for the bulbs from 150 to 250's. So besides the ballast, bulb and socket you would need. I have read that its not that hard to do and is doable.

10/03/2010, 08:43 PM
Thanks. I was trying to find the dimensions of the bulbs to figure out if they were different. So I'm guessing that the 250s are larger?

10/03/2010, 09:33 PM
Yes, 250 watt HQI bulbs are longer than 150 watt HQI bulbs. They also use a different socket type and different ballast.