Citrus > Cold Hardy Citrus

Indoor citrus, Lighting length time and warmth ??

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franklazar26:
Here is my light, I am choosing to keep it on about 11 hours. From a cool test run today of 10 hours it made the temps around go from 67 to 80 within that time frame, also it was with all lights going, at full blast. It has the ability to switch on and off certain lighting (blue, red, IR) Again it will be enclosed in this closet the entire time with no natural light. I am also choosing to change the cycle of lighting while I sleep as the wife hates the closet illuminated so brightly by this new intensity haha. So it will be on from approx 8:00pm till 7:00 am. It is a very intense light and my plants seemed to like the distance. The mango leaf even grew 1 cm today alone! (I measured). I am wondering if you guys think I should put in a small fan to create better air circulation? I did not use the fan in the background at all, it is a little too powerful for the small closet. I dont want the heat to become hazardous. Also would I be able to get away with just running blue to keep the power consumption as well as heat down? All I have are saplings and small trees! Thank you guys for the help and tips!






SeaWalnut:

--- Quote from: Millet on October 26, 2019, 10:35:46 PM ---I use a Metal Halide light.  When I light a citrus tree, I turn the light on near sunset, and turn the light off at 10:30 (when I go to bed).  I put the light 12" above the tree.

--- End quote ---
Metal halide light is the best but consumes a lot of current.
Second after MH are the T8 tubes ,then T5 and the last with the worst type of light are the LEDs ( any of them).
I wonder if the sodium lamps have a good spectrum for plant growth.They are somewhat like MH but contain only sodium and they give a lot of light .
Xenon lamps are better than even MH and they give a light per watt just like LEDs.The downside is their too expensive , not easy to find replacement bulbs and the bulbs usually last @10 months lighted 12 hours a day.

SeaWalnut:

--- Quote from: franklazar26 on October 27, 2019, 05:44:09 PM ---Here is my light, I am choosing to keep it on about 11 hours. From a cool test run today of 10 hours it made the temps around go from 67 to 80 within that time frame, also it was with all lights going, at full blast. It has the ability to switch on and off certain lighting (blue, red, IR) Again it will be enclosed in this closet the entire time with no natural light. I am also choosing to change the cycle of lighting while I sleep as the wife hates the closet illuminated so brightly by this new intensity haha. So it will be on from approx 8:00pm till 7:00 am. It is a very intense light and my plants seemed to like the distance. The mango leaf even grew 1 cm today alone! (I measured). I am wondering if you guys think I should put in a small fan to create better air circulation? I did not use the fan in the background at all, it is a little too powerful for the small closet. I dont want the heat to become hazardous. Also would I be able to get away with just running blue to keep the power consumption as well as heat down? All I have are saplings and small trees! Thank you guys for the help and tips!







--- End quote ---
Plants use verry little blue .Use red or the pink one and not blue at all.The pink light you call IR is actually a UV wannabee( UVA) and that has both blue and red in it.
LEDS cant output real UV like UVC  and UVB because these lights are the ones that cause sunburn and would destroy the plastic LEDs in just a few hours.

franklazar26:

--- Quote from: SeaWalnut on October 27, 2019, 06:00:08 PM ---
--- Quote from: franklazar26 on October 27, 2019, 05:44:09 PM ---Here is my light, I am choosing to keep it on about 11 hours. From a cool test run today of 10 hours it made the temps around go from 67 to 80 within that time frame, also it was with all lights going, at full blast. It has the ability to switch on and off certain lighting (blue, red, IR) Again it will be enclosed in this closet the entire time with no natural light. I am also choosing to change the cycle of lighting while I sleep as the wife hates the closet illuminated so brightly by this new intensity haha. So it will be on from approx 8:00pm till 7:00 am. It is a very intense light and my plants seemed to like the distance. The mango leaf even grew 1 cm today alone! (I measured). I am wondering if you guys think I should put in a small fan to create better air circulation? I did not use the fan in the background at all, it is a little too powerful for the small closet. I dont want the heat to become hazardous. Also would I be able to get away with just running blue to keep the power consumption as well as heat down? All I have are saplings and small trees! Thank you guys for the help and tips!







--- End quote ---
Plants use verry little blue .Use red or the pink one and not blue at all.The pink light you call IR is actually a UV wannabee( UVA) and that has both blue and red in it.
LEDS cant output real UV like UVC  and UVB because these lights are the ones that cause sunburn and would destroy the plastic LEDs in just a few hours.

--- End quote ---

Okay thanks! I thought blue was for vegetative growth and red was for blooming or something on the line of that? But okay, makes sense. So if I were not to want to run all the LEDs at once (purple), to pick one over the other I should run red over blue? My only concern with running purple is that it creates a much higher heat output than if I were to use one or the other.

brian:
Is the "600W" light actually 600 Watts, or "600 watt equivalent" which is common with CFL and LEDs? 

I recently bought a "1200W equivalent" LED light fixture which the fine print says consumes ~200-250W power.  It was $90 on amazon.  Yours is likely similar if it is LED.  A true 600 watts-consumed LED fixture would likely cost $300+ and I've never actually seen one rated above 1500-watt-equivalent

I don't have any citrus under mine yet, only my wife's cooking herbs and a couple random seedlings I had extras of - lychee and ice cream bean.  They are growing well under the light, but it is too early for me to tell how they compare to the same seedlings in my greenhouse under only natural light.

I have my light running 16hrs a day on a timer, it is in my basement which is around 65F all year.  The light doesn't create enough heat to notice as it is in a wide open area.   200W 16hrs/day is under ten bucks a month in power cost

200Watts = 0.2 kilowatt-hours
power is ~10c kilowatt-hour
30 days a month, 16hrs a day
.200 * .10 * 30 * 16

$9.60

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