Finnex Ray 2 Photo Period
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Old 06-28-2013, 11:54 PM   #1
rcs0926
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Finnex Ray 2 Photo Period


For those of you who have a Finnex Ray 2, how long do you run your light fixture? I know the general rule for aquarium lighting has always been 10-12 hours, but I've been running into random threads from LED fixture owners who say that they've had to reduce their photo periods. Thanks.
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Old 06-29-2013, 12:17 AM   #2
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duration is only one factor... light intensity, largely dependent on the elevation of the light above the substrate and plant density.

i run 6 hours then progressively extend to 8 when i spend time in my fish room.
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Old 06-29-2013, 12:26 AM   #3
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My original 24 hr cycle (6am start) was 3 on, 7 off, 7 on, 7 off with good plant growth success and no algae problems after the tanks reached an equilibrium. Tried an increase to 12 hour "on" total and went to 6 on, 4 off, 6 on, 8 off and experienced algae problems. Readjusted back to 10 hour "on" total with a 5 on, 6 off, 5 on 8 off sked which with the help of a week long Excel treatment resolved the algae spurt. For me anyways, it looks like keeping the total photo period at the low end (10 hrs) for not only Finnex lamps but other LED lamps (Ehiem, Archaea, Up Aqua) that illuminate my planted tanks. Hope that helps.
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Old 07-01-2013, 05:12 PM   #4
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Quote:
Originally Posted by BeastMaster View Post
My original 24 hr cycle (6am start) was 3 on, 7 off, 7 on, 7 off with good plant growth success and no algae problems after the tanks reached an equilibrium. Tried an increase to 12 hour "on" total and went to 6 on, 4 off, 6 on, 8 off and experienced algae problems. Readjusted back to 10 hour "on" total with a 5 on, 6 off, 5 on 8 off sked which with the help of a week long Excel treatment resolved the algae spurt. For me anyways, it looks like keeping the total photo period at the low end (10 hrs) for not only Finnex lamps but other LED lamps (Ehiem, Archaea, Up Aqua) that illuminate my planted tanks. Hope that helps.
This sounds great. I think I'll try using your photo period.
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Old 07-01-2013, 05:15 PM   #5
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I think I'll start the lights up at 6AM so that I can see my tank in the morning before I go to work and let it run until 11AM. The lights won't come on again until 5PM, which is nice because they'll turn on in time for me to come back home from work and enjoy my tank during the evening.
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Old 07-01-2013, 05:29 PM   #6
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That's what works for me too on both counts. I know that CO2, planting & animal stocking levels factor into this but finding the tank's settled equilibrium point is the key and then adjusting from there to optimized your system. Good luck.
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Old 07-01-2013, 05:34 PM   #7
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Quote:
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That's what works for me too on both counts. I know that CO2, planting & animal stocking levels factor into this but finding the tank's settled equilibrium point is the key and then adjusting from there to optimized your system. Good luck.
Do you have your fixture raised or just mounted using the standard clip mounts?
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Old 07-01-2013, 08:39 PM   #8
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Split photoperiods are useful in two instances. When you have a non-CO2 tank to let the CO2 build back up between on cycles and to help "extend" your viewing times for the day. If you have pressurized CO2, there is not much value in a split outside of viewing times.
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Old 07-01-2013, 08:40 PM   #9
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Split photoperiods are useful in two instances. When you have a non-CO2 tank to let the CO2 build back up between on cycles and to help "extend" your viewing times for the day. If you have pressurized CO2, there is not much value in a split outside of viewing times.
I have DIY CO2, so I'm assuming this should help.
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Old 07-01-2013, 11:48 PM   #10
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Quote:
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I have DIY CO2, so I'm assuming this should help.
If you feel like your plants demand for CO2 is outstripping the supply of your DIY, then yes.
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Old 07-02-2013, 06:44 PM   #11
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Quote:
Originally Posted by rcs0926 View Post
Do you have your fixture raised or just mounted using the standard clip mounts?
On all of my tanks the fixtures at mounted onto the tanks.
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Old 07-02-2013, 06:45 PM   #12
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Quote:
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On all of my tanks the fixtures at mounted onto the tanks.
Good to know. Thanks.
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