ReeferBatman
New member
Dark / Light = It's the flip side of the same coin...
Recently after adding more light, I cut back from a 9 hour day, to two 4 hour periods of lighting (4 on / 8 off) as I read some interesting things from coral propagators.
Initial results looked good, with generally a bit more robust corals.
I think if I kept it up it would in-fact speed up the growth rate of the corals.
Most people who undertook this 4 on/8 off approach said the fish didn't care.
None of my 'normal' fish did care... but my leopard Wrasses that bury themselves at night, and come out for 2/3rds the day before diving back into the safe sand were not seen for multiple days.
These fish seem much more attuned to the 'light cycle' and use it for their own purposes (when to go to sleep/ awake)... and the 4/8 thing really through them for a loop! The male hasn't eaten in a few days because he didn't know when to come out to find light!
I didn't want to risk the leapard wrasses time-cycle being thrown off too much, so I went back to a more standard 7.5 hours of light straight.
But here is my question: How much Dark does the coral actually need for good growth?
If my tank's lights are on from 3:30-11pm, and I give them a full 8 hours dark, would it benefit the corals at all to give them an extra 2-3 hours of light in the early morning (say 7-9:30am) and then 6 hours dark before the 'normal day' cycle of 7.5 hours?
This way the day-cycle-sensitive fish would still have their 'day', and the corals could still get a little extra "oomph".
I know those extra 2 hours wouldn't do much added on to the 7.5 hour day cycle (in my case of strong lighting, actually photo-inhibition is more likely)... but IS 6 HOURS DARK ENOUGH TIME for the coral to actually use that extra 'morning light', or will it just throw off the normal 'day cycle' and lead to photo-inhibition / interrupting the photo-periods and growth?
IE - is this good or bad to attempt... or Should I just stick to the day only cycle w/ 16.5 hours of dark?
Day cycle - 3:30pm-11pm
Dark cycle- 11pm-7am
small light cycle - 7-9:30
small dark cycle - 9:30-3:30
I KNOW the coral won't be as productive with only 2.5 hours of light (as they peak photosynthetic activity @ 3.5 - 4 hours into light cycle), but my question, is will the extra light HARM/interfere with the normal photo-periods/growth of the coral... or will it just give them a little extra photosynthetic potential?
Recently after adding more light, I cut back from a 9 hour day, to two 4 hour periods of lighting (4 on / 8 off) as I read some interesting things from coral propagators.
Initial results looked good, with generally a bit more robust corals.
I think if I kept it up it would in-fact speed up the growth rate of the corals.
Most people who undertook this 4 on/8 off approach said the fish didn't care.
None of my 'normal' fish did care... but my leopard Wrasses that bury themselves at night, and come out for 2/3rds the day before diving back into the safe sand were not seen for multiple days.
These fish seem much more attuned to the 'light cycle' and use it for their own purposes (when to go to sleep/ awake)... and the 4/8 thing really through them for a loop! The male hasn't eaten in a few days because he didn't know when to come out to find light!
I didn't want to risk the leapard wrasses time-cycle being thrown off too much, so I went back to a more standard 7.5 hours of light straight.
But here is my question: How much Dark does the coral actually need for good growth?
If my tank's lights are on from 3:30-11pm, and I give them a full 8 hours dark, would it benefit the corals at all to give them an extra 2-3 hours of light in the early morning (say 7-9:30am) and then 6 hours dark before the 'normal day' cycle of 7.5 hours?
This way the day-cycle-sensitive fish would still have their 'day', and the corals could still get a little extra "oomph".
I know those extra 2 hours wouldn't do much added on to the 7.5 hour day cycle (in my case of strong lighting, actually photo-inhibition is more likely)... but IS 6 HOURS DARK ENOUGH TIME for the coral to actually use that extra 'morning light', or will it just throw off the normal 'day cycle' and lead to photo-inhibition / interrupting the photo-periods and growth?
IE - is this good or bad to attempt... or Should I just stick to the day only cycle w/ 16.5 hours of dark?
Day cycle - 3:30pm-11pm
Dark cycle- 11pm-7am
small light cycle - 7-9:30
small dark cycle - 9:30-3:30
I KNOW the coral won't be as productive with only 2.5 hours of light (as they peak photosynthetic activity @ 3.5 - 4 hours into light cycle), but my question, is will the extra light HARM/interfere with the normal photo-periods/growth of the coral... or will it just give them a little extra photosynthetic potential?