Changing my MH bulbs, do i need to acclimate?

So i am getting ready to change out my bulbs. Do i need to acclimate my tank to the new lights? I have two 150watt lights. One is noticeably getting dim and the other i believe has some life left in it. I was thinking about just changing the dim one and leaving the other one for another month or so? What do you all think?
:-/

 

You deff need to acclimate but prolly just a shorter time.

 

Hmm if you have been using that light system for a while and your corals and fish are used to MH's.. i would change them both so its nice and fresh new light and shorten light cycles for a few days and see how the Live stock reacts.. If all seem normal reaction like your old bulbs of course slowly bring it up to normal light cycles..

I have changed my MH's before old bulbs to new ones... and never changed my light cycle and i realy did not notice any affects. also changed them at night so the mh's are cool and the new ones start fresh in the am..

Hope this helps...
My crusty $.02

Best of luck...

 

you can also use window screens if need be just a thought start off with 3 or so and take one off at a time.. till youve acclimated your corals