Photo period after changing bulbs

[pochaxoo]

Ok, I just changed out my bulbs on my 2 X 150 MH from 12K to phoenix 14K bulbs. Do I need to adjust my photo period for any amount of time? I run the MHs from 12:00 - 9:00. Any help is appeciated.

 

[acroholic]

I wouldn't worry about it myself. If you were going ot a much more efficient reflector, or from T5 to MH, etc, definitely lower the photoperiod for a while. I would not change a thing just for bulb replacement.
Dave

 

[darren24]

Just keep an eye on things. I changed from 14K Phoenix to 20K XM's about 4 months ago. Things were just not looking right (color wise) so I changed back to 14K Phoenix's this week. I just noticed that a couple of my nicest chalices are now losing tissue. I think the Phoenix's are putting out a lot more light than the XM's were.