Changing bulbs?


I have 110 vho super actinic & actinic whites (4 bulbs total 2 each) that are 2 yrs old and I want to replace with the same bulbs but I am concerned about the intensity of the new bulbs creating an algea bloom. I currently have no problems and do not want to create any but I most change the bulbs due to the age of them. Can anyone tell me the best way to replace these without causing a bloom or any other disruption?


Active Member
Everybody has to switch their bulbs at one time or another. Most worry about their coral and what effect the more intense bulbs will have on them. With VHO I personally wouldn't screen acclimate the tank by placing screens on top of tank and each week removing one screen. If your tank water is good and low on nutrients I would not worry about an algae bloom. I believe that the nutrients in the water enables the algae to grow. Sure, the lights will assist with algae growth but the only thing that I think you might see is more algae on the glass.