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View Full Version : aging light.....


ctniners
09/02/2009, 06:24 AM
Hello guys,
I bought a 150W 20K Radium bulb in February, I love the light, it also gave me great growth on my sps, taking into account I am running a 28 gal jbj nano cube, I added 2 x 18w pc actinic bulbs in November of last year.......my issue is, how do I know if its time to change a bulb?......I ask because I am having issues with brown algea growing on my corals all of the sudden....my monti plate is covered with this brownish stuff, and it has to be algae because I never saw my crabs crawling all over my sps........I was told to reduce the light cycle from 8 to 6 hours? or even turn off the lights for 24 hours??...would that ok?......could it be the bulb? or the actinic bulbs?.....I did any test possible and all parameters are good.....


Any help will be greatly appreciated.

AV

ctniners
09/02/2009, 12:37 PM
any inputs?