Comments on: The Most Important Thing To Do Once You Replace Your Bulbs

By: Mark Callahan

Mark Callahan — Thu, 14 Jul 2011 03:14:38 +0000

Eduardo…its really up to you. I run my actinics for 12 hrs and my halides for 7 hrs.

By: Eduardo

Eduardo — Wed, 13 Jul 2011 00:06:02 +0000

Hi Mark,

In my 52 gal marine aquarium i have a 192 Watts power compact lighting system (96 Watts Daylight and 96Watts actinic). Could you tell me what must be the light photoperiod? How many hours Daylight and How many hours actinics?

Thanks

By: Mark Callahan

Mark Callahan — Tue, 27 Jul 2010 17:27:07 +0000

Luis…Here’s how I’d ramp up your lights:

day 1-3: white’s on for 2 hrs, blues on for 4
day 4-7: whites on for 4 hrs, blues on for 6
day 8-11: whites on for 6 hrs, blues on for 8, etc, etc

By: Luis

Luis — Mon, 05 Jul 2010 22:31:38 +0000

If I could understand is something like this:

Photoperiod from T5 white 8:00 to 7:00 ant T5 Blue 9:00 to 8:00

So you are suggesting that when new bulbs are inserted that the photoperiod becomes slower like this:

1st week 8:00 to 6:00 white 9:00 to 7:00 blue
2nd week 8:00 to 7:00 white 9:00 to 8:00 blue

Something like that