Home | Community | Message Board


Vaposhop
Please support our sponsors.

Cannabis, Marijuana, Ganja & Greens >> Cannabis Cultivation

Welcome to the Growery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Amazon Shop: HPS

Jump to first unread post. Pages: 1
OfflineKaptKid
Spaced Pirate
Male User Gallery


Registered: 04/20/08
Posts: 5,515
Loc: Bright Side of the Sun
Last seen: 5 months, 6 days
Hps Lighting
    #73688 - 07/06/08 04:48 PM (9 years, 2 months ago)

I have a 1000 watt light. How far from the plants should the light be?


--------------------
Child of the 60's, Tripping ever sence.


Post Extras: Print Post  Remind Me! Notify Moderator
Invisiblecoda


Registered: 04/20/08
Posts: 4,734
Trusted Cultivator
Re: Hps Lighting [Re: KaptKid]
    #73694 - 07/06/08 05:59 PM (9 years, 2 months ago)

at least two feet.  Place your hand underneath the light, if it's too hot for the back of your hand it's too hot for your plants.


--------------------


MFDoom666: sobriety kills my buzz every time.


Post Extras: Print Post  Remind Me! Notify Moderator
OfflineKaptKid
Spaced Pirate
Male User Gallery


Registered: 04/20/08
Posts: 5,515
Loc: Bright Side of the Sun
Last seen: 5 months, 6 days
Re: Hps Lighting [Re: coda]
    #73928 - 07/06/08 10:06 PM (9 years, 2 months ago)

Thanks


--------------------
Child of the 60's, Tripping ever sence.


Post Extras: Print Post  Remind Me! Notify Moderator
OfflineSirius
Saturn Ascends


Registered: 04/20/08
Posts: 1,540
Loc: The Milky Way
Last seen: 1 year, 5 months
Trusted Cultivator
Re: Hps Lighting [Re: KaptKid]
    #74616 - 07/07/08 08:46 AM (9 years, 2 months ago)

Temperature is really the only determining factor regarding the distance one places the lamps from the plants, excluding, of course, the possibility of light intensity being high enough that light bleaching occurs. Start with a general rule like coda posted and make adjustments depending on the temperature of the canopy. The hand test, like he also posted, works well, and of course a thermometer will work as well.

If the reflector for your lamp is air-cooled, this will change the distance the light can be from the plants, and having a fan blowing air across the canopy underneath the lamp will help too. The closer you can get the light to the canopy without the temperature becoming too hot, the better (generally, as it is possible to have too much light intensity on the plants as mentioned above), since not doing so is only wasting light that the plant could be using (inverse-square law).


--------------------


Post Extras: Print Post  Remind Me! Notify Moderator
Jump to top. Pages: 1

Amazon Shop: HPS

Cannabis, Marijuana, Ganja & Greens >> Cannabis Cultivation

Similar ThreadsPosterViewsRepliesLast post
* HPS Light mrspirit 1,905 12 02/04/09 03:44 PM
by Nibin
* hps light questions? zenthor 4,516 7 02/01/09 03:24 PM
by Nibin
* About Lights Picklez 4,427 1 07/04/09 02:30 AM
by captainmurphie
* Help With lIghting omentheduck 1,510 2 02/08/09 01:31 PM
by omentheduck
* Site Spacing Design and Light Penetration Questions lothario 1,378 4 03/24/09 02:41 PM
by Dr. Penguin
* Lighting Choices 70W HPS or 2 - 40W fluorescent tubes? karma_agent 8,664 8 11/01/08 11:44 PM
by Dr. Penguin
* UVB Lights
( 1 2 3 all )
coda 38,247 57 06/02/13 02:23 PM
by Hawksresurrection
* Using strip lights dang 1,647 12 12/03/08 05:37 PM
by mhbound

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: FurrowedBrow, Magash, Data, Dr. Siekadellyk, phychotron, Miscusi
855 topic views. 0 members, 335 guests and 78 web crawlers are browsing this forum.
[ Toggle Favorite | Print Topic | Stats ]
Search this thread:
World Seed Supply
Please support our sponsors.

Copyright 1997-2017 Mind Media. Some rights reserved.

Generated in 0.03 seconds spending 0.008 seconds on 19 queries.