ligthing photoperiod

Omar H · 09/04/2005, 07:09 PM

What is the photoperiod that you`re following on your MH.

Currently I've got DE 250w over my tank at 11 hours a day. But was considering reducing the time each lamp is on per day from 11 to 8 hours per lamp.

If done this would be done very slowly...say like reducing 15 minutes o light every 2 weeks until reaching the 8 hour mark. Of course only if this is beneficial to the clams.

I'd like to hear your thoughts.

Omar

Omar H · 09/10/2005, 10:14 AM

Aside from the obvious (most keep each bulb on for ten hours) there is a noticeable preference for having your lights on for a number of even hours over odd.

Thanks to all for sharing.

Omar

JR719 · 09/10/2005, 08:12 PM

I have my MH on for 6 hours and the actinic VHO's on for 12 hours. I am going to get rid of one actinic and add a 10K or 50/50 VHO. Clams are doing great and the squammy growing a little fast.

View Poll Results: How many hours per day is each MH bulb on?
less than 8 hours	3	9.09%
8 hours	7	21.21%
9 hours	1	3.03%
10 hours	11	33.33%
11 hours	2	6.06%
12 hours	7	21.21%
more than 12 hours	2	6.06%
Voters: 33. You may not vote on this poll

09/04/2005, 07:09 PM	#1
Omar H Registered Member Join Date: Aug 2002 Location: Ciudad Juarez, Chih. Mexico Posts: 366	ligthing photoperiod What is the photoperiod that you`re following on your MH. Currently I've got DE 250w over my tank at 11 hours a day. But was considering reducing the time each lamp is on per day from 11 to 8 hours per lamp. If done this would be done very slowly...say like reducing 15 minutes o light every 2 weeks until reaching the 8 hour mark. Of course only if this is beneficial to the clams. I'd like to hear your thoughts. Omar __________________ Tank 125g reef lights, 3 X PFO 250w DE HQI w/10k Ushios; Skimmer, AquaC EV 180 w/Iwaki 20RLT, recently changed to Panworld 50-PX (still adjusting), in-line with the tank; MRC CR-2. Current Tank Info: 29 gallon

09/10/2005, 10:14 AM	#2
Omar H Registered Member Join Date: Aug 2002 Location: Ciudad Juarez, Chih. Mexico Posts: 366	Aside from the obvious (most keep each bulb on for ten hours) there is a noticeable preference for having your lights on for a number of even hours over odd. Thanks to all for sharing. Omar __________________ Tank 125g reef lights, 3 X PFO 250w DE HQI w/10k Ushios; Skimmer, AquaC EV 180 w/Iwaki 20RLT, recently changed to Panworld 50-PX (still adjusting), in-line with the tank; MRC CR-2. Current Tank Info: 29 gallon

09/10/2005, 08:12 PM	#3
JR719 Tang Cop Join Date: Sep 2004 Location: OK Posts: 2,240	I have my MH on for 6 hours and the actinic VHO's on for 12 hours. I am going to get rid of one actinic and add a 10K or 50/50 VHO. Clams are doing great and the squammy growing a little fast. __________________ Can't sleep, clowns will eat me. America is the most grandiose experiment the world has seen, but, I am afraid, it is not going to be a success. Sigmund Freud Current Tank Info: 300 reef, Aqua controller, Deltec calcium reactor, Reeflo 250 skimmer, Icecap bla bla bla