How long to leave my daylight lamp on for?

8:31 am in Getting Started, questions, Seeking Advice, Starting Seeds, Version 3.0 Modular Airlift Columns by Andrew Walker

Hi folks,

I’m wondering how long to leave on my supplement lighting to give my 1 week old plants the best start.
The windowfarm hangs in Amsterdam and minimal sunlight shines from +/- 8.00 am until 17.00 pm

I have purchased a large Philips CFL Daylight bulb (200watts output –> 45 watt usage)
It live about 2 meters from the window farm and I’ve made an aluminium-foil reflector.
There is a timer attached to the light.

Any advice on lighting intervals and what time of day to light is very welcome.

Regards,

Andrew

2 Comments »

2 Responses to How long to leave my daylight lamp on for?

Greg said: On February 15, 2012

How hot is the light (what’s the Kelvin temperature?)
Andrew Walker said: On February 18, 2012

Hi Greg, the color temperature of the Philips Daylight bulb is 6500 Kelvin.
Here’s a page with it’s specification: http://www.svetila.com/en/tornado-high-lumen-60w-cdl-865-230v-e27-6369.html

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