cat23 said:
I guess I'm going to have to upgrade my lighting to 250W. How many "K" though? I only got this light in January and already am upgrading the bulbs. I hope this works! Do you think replacing one is a good idea or should I just replace both bulbs at the same time?
If you moved the clam closer to the light, and the clam chooses to remain where it is, you may be able to keep your current lighting. Keep an eye on the clam. If it should start to lose coloration then you may have no choice but to upgrade.
Also, it's more involved than simply replacing bulbs. You'll have to upgrade the ballast and the sockets as well. I personally love the look of Iwasaki 6500k bulbs when supplemented with either VHO or PC actinic lighting.
HTH