I replaced my lights last week...all of them. And man what a difference. The color had shifted more then I would have guessed. My T5's and MH were about 14 months old. I know, way overdue to change. I replaced my Radium 20k's with the same. I replaced my T5 454's with Giesemann PowerChrome Actinic+ bulbs. The Actinic plus bulbs are a darker blue then the 454's were which is what I wanted.
I cut back on my light MH light cycle to 3 hours to break my corals in to the new lights. I have been increasing 30 minutes every 4 days or so. I will be up to 4 hours today. My plan is to get the MH cycle to 6 hours on which is were I had it before.
Corals are looking good so far. No changes besides the fact that the corals look better under the color of the new bulbs.
I recently upgraded my Ca and Alk jugs from 1 gallon to 7 gallons. I am adding about 250ml of each per day with my BRS dosers. I was getting tired of making Ca and Alk every month. 7 gallons of each should give me some time in between.
The best thing of all is that my stand did not fall over, or lean, or crack. That actually was a worry of mine :beer: