Comments for this article (6)

• PBNJ says:

  04.08.2011 at 10:56 am

  I’m assuming that a 250W bulb is ok to run on the ‘HQI’ setting? This is technically overdriving the bulb though….any issues with that?
• Mark Callahan says:

  04.08.2011 at 11:02 am

  PBNJ…running a 250W bulb on the HQI setting is overdriving the bulb slightly (about 10%) so while you won’t see the bulb explode, you will shorten the bulb life by pushing the extra power to it.
• Mike says:

  04.08.2011 at 11:40 am

  I have 250/400w adjustable ballasts that have an HQI setting. I run them at 250w with 250w bulbs. What exactly is the HQI setting, and is it usable with any 250w bulbs or are there “HQI” bulbs?
• Mark Callahan says:

  04.09.2011 at 9:22 pm

  Mike…the HQI setting is for double ended bulbs. You can run your single ended (mogul) bulbs on this setting but you will likely reduce their life as you are pushing extra power to them.
• zac says:

  04.10.2011 at 1:38 pm

  you should make another stop at hydro inavations id like to see a update on the 440
• Kurt Doctor says:

  04.11.2011 at 8:18 pm

  Hi what wou you recomend on a led system for a 29 gallon biocube reef tank? Also how is your led systm working?

Comments are closed.