View Full Version : How long do you leave your tank's light on?
Madness
07-14-2007, 7:23 PM
8 hours with a few plants.
Currently 11-12 hours. I try to mimic sunrise/sunset as much as I can with my current setup. I have no way to dim the tank lights, but I do have the room lights on for about an hour before and after the main photoperiod.
J double R
07-14-2007, 7:36 PM
battling some green water, dont feel like blacking out, so i'm running about 3 hours a day.
ct-death
07-14-2007, 8:13 PM
10 hours total .. 2 in the am and then 8 in the evening. All my tanks are along inside walls.
Nolapete
07-14-2007, 8:15 PM
What's up with the title of this post?
How much salt does a water conditioner add?
rich311k
07-14-2007, 9:25 PM
I run mine for ten hours. Seems to be just the right amount.
Weezer
07-14-2007, 9:37 PM
8 hours here, with lamp room light after that for about 1-2 hours....:)
mee-mee
07-14-2007, 9:50 PM
I turn off the 29 before the 80 lights go off...and then they do have lamp light for about another hour and half or so....:)
Firebelly__girl
07-14-2007, 9:51 PM
What's up with the title of this post?
How much salt does a water conditioner add?
LOL i see that too, it didnt say that on the page with all the threads, but after I took the poll thats what the top of the page says haha
Plecosterone
07-15-2007, 12:59 AM
11 hours: 9:00 am - 8:00pm. I cut my light intensitiy and length down and my plants are much healthier and hardly any algae.
Tycoon
07-15-2007, 1:03 AM
Thanks for voting guys! Looks like I'd be doing 10 hrs then... 12 hrs is a bit long imo.
What's up with the title of this post?
How much salt does a water conditioner add?
aha wierd... I see it too :screwy:
AnDr3w
07-15-2007, 1:09 AM
Usually 13+...
Until I wake up: 1-2 pm
Until I go to bed: 2-4 am
unbeatablec
07-15-2007, 1:27 AM
Usually 13+...
Until I wake up: 1-2 pm
Until I go to bed: 2-4 am
lmfao same
Mgamer20o0
07-15-2007, 2:05 AM
10 hours
geofied
07-15-2007, 3:20 AM
So why, in your opinion, is 12hrs too long?
Here is a fun fact for you...
üLight duration: photosynthetic production is directly proportional to the length of the day.
ü The longer the day, the more photosynthesis takes place and the more a plant can grow.
The sun is up in the tropics about 12hrs/day all year round, and most of our plants come from tropical and sub-tropical environments. The sun is much more intense than any lighting we can put on our tanks, even on a cloudy day.
For those saying that more than 10hrs/day will bring algae, it is probably due to your available nutrients and light intensity. For those of us with medium to medium-high light 12+ hours/day will likely be optimal.
Derringer
07-15-2007, 11:27 AM
Timer runs main lights 10am-10pm & moon lights 9:50pm-1:00am ... I do plan to adjust that time for winter months.
jm1212
07-15-2007, 2:47 PM
less than 7
my tank gets plenty of natural sunlight because of all of the afternoons sun i get. i scrape the algea off the sides every week so its hard to tell :D
JohnInFlorida
07-15-2007, 3:55 PM
10 hrs. On @ 9am, off @ 1pm, on @ 4:30pm off @10:30pm
lovejonesx
07-16-2007, 2:31 PM
I do 10 hours normally.
LJx
Squawkbert
07-16-2007, 2:38 PM
My main tank is at 8h for now. I may bump it up a little as long as algae stays in check.
My little 5g office tank only gets 8.5h as it breaks out every time I try to up it.
My 1g shrimp tank is lit 24h, but just by a 4W bulb, mostly to keep it just above RT. It's loaded w/ hair algae, but I'll address that when I move it into a larger tank.