How many hrs of light per day?

Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

THanks

In a word: Twelve

Actually I think opinions will vary from 10-14 hours, but 12 is a good
starting point. If you are running a whole lotta light... go for less
(maybe). Low light=longer (maybe).

In article msWyf.117941$OU5.99899@clgrps13,
Dave@AquaFlora wrote:
Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

Within reason, they don't care. Ideally they get 12 hr on 12 hr off
but a fewe hours either way doesn't really matter. Lots of plants are
grown under 24 hr light.

--
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"Dave@AquaFlora" wrote in message
news:msWyf.117941$OU5.99899@clgrps13...
Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

THanks

My tanks are low - moderate light plants and
I run the lights 12 hours daily, even in winter.
I suppose one could shorten the time in
winter. Maybe I'll try that.

Gail
near San Antonio TX where "winter"
is rather rare

"Dave@AquaFlora" wrote in message
news:msWyf.117941$OU5.99899@clgrps13...
Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

THanks
=================
Mine are on 12 hours a day, give or take 15 to 30 minutes.
--

Koi-Lo.... frugal ponding since 1995...
Aquariums since 1952
My Pond & Aquarium Pages:
NEW PAGE: Aquariums:
http://bellsouthpwp.net/s/h/shastada...ium-Page4.html
http://bellsouthpwp.net/s/h/shastadaisy
~~~ }((((o ~~~ }{{{{o ~~~ }(((((o

"Koi-lo" wrote in message
...

"Dave@AquaFlora" wrote in message
news:msWyf.117941$OU5.99899@clgrps13...
Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

THanks
=================
Mine are on 12 hours a day, give or take 15 to 30 minutes.


What size tank Koi ? how many watts of light ?

Thanx.

On Tue, 17 Jan 2006 00:00:18 GMT, "Dave@AquaFlora"
wrote:

Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

THanks


Mine are on timers: on 4am, off 1pm, on 3pm and off 8pm, 14 hours
total.

In nature the hours would vary by season and weather, so who can say?

dick

"Steve Michie" wrote in message
...

"Koi-lo" wrote in message
...

"Dave@AquaFlora" wrote in message
news:msWyf.117941$OU5.99899@clgrps13...
Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

THanks
=================
Mine are on 12 hours a day, give or take 15 to 30 minutes.


What size tank Koi ? how many watts of light ?

Thanx.
=================================
All my tanks contain live plants. The 10's have those new screw-in
fluorescent bulbs = two 60w bulbs in each reflector.
The 5g has two 40s. The two 55's have those shop lights sitting right on
the rim with 2 40s each. I wish I could get stronger bulbs (like 80ws per
bulb) for these strip reflectors but haven't come across any locally. Since
I have plants in these tanks I change the bulbs yearly as they lose their
ummpt after a year.
--

Koi-Lo.... frugal ponding since 1995...
Aquariums since 1952
My Pond & Aquarium Pages:
Aquariums: http://bellsouthpwp.net/s/h/shastada...ium-Page4.html
http://bellsouthpwp.net/s/h/shastadaisy
~~~ }((((o ~~~ }{{{{o ~~~ }(((((o

Dave@AquaFlora wrote:
Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

THanks


My lights are on for as long as I'm awake and watching the fish. So on
average this can be around 15 hours a day. I think I've read somewhere
that 12 is the optimum for plants and that any light over and above that
is a waste - unless of course you want to view the fish

Gill

On Tue, 17 Jan 2006 16:53:02 +0000, Gill Passman
wrote:

Dave@AquaFlora wrote:
Anyone's opinions welcome: how long should lights be left on per day to
ensure that plants get their proper photoperiod?

THanks


My lights are on for as long as I'm awake and watching the fish. So on
average this can be around 15 hours a day. I think I've read somewhere
that 12 is the optimum for plants and that any light over and above that
is a waste - unless of course you want to view the fish

Gill

I'm with you Gill and like to view my fish after dinner up to bedtime
so I adjust my timer - on at 7am, off at 10am on at 3pm, off at 11pm