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Post by danyoh on Nov 16, 2015 1:11:23 GMT -5
I'm a new CP grower as you all know and this is my first winter. Starting to notice that my seedlings are not doing so well due to lack of sun.
Can anyone recommend me a good light? Went to home depot and saw some pricey T5s but their pricetag is fairly high ( but I'm not sure if they're worth it.
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Post by edwardmelnyk on Nov 16, 2015 1:36:04 GMT -5
I use sunblaster t5 ho and they're quite good. I don't know really how much the price has to be before it becomes expensive, but I've had good results with sunblaster as this is my first winter too.
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Post by bonfield on Nov 16, 2015 1:46:42 GMT -5
Most of my collection is under T8 shoplights(~$25 at Home Depot) with 6500K daylight tubes, I have no complaints about them so far.
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Post by lloyd on Nov 16, 2015 7:42:32 GMT -5
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Post by pbwaj on Nov 16, 2015 10:33:25 GMT -5
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Post by danyoh on Nov 16, 2015 17:08:35 GMT -5
Thanks guys! Going to get one by the end of this week
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Post by Maiden on Nov 16, 2015 18:52:26 GMT -5
Sunblasterlighting.com :-)
My plants just love that light !
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Post by WillyCKH on Nov 17, 2015 11:58:35 GMT -5
I'll have some LEDs that I made for sale in spring
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Post by danyoh on Nov 17, 2015 13:39:32 GMT -5
Ah I need it to get by winter, thanks though Willy
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Post by WillyCKH on Nov 17, 2015 14:24:34 GMT -5
Good luck finding a good light
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Post by Apoplast on Nov 17, 2015 22:51:20 GMT -5
Hi Danyoh - I have plants under T5 shop lights, T5HO lights, UFO LED grow lights, and even some under white LED shops lights. They all seem to work just fine. All you need to do is provide enough light for your plants without overheating them. The necessary light and danger temperature will vary depending on what you are growing. The most important thing to remember is that light obeys the inverse square law, so the closer you can get your plants to the light source the better (as long as you don't cook them - that's where that pesky over heating this comes in). I'm sure you'll do fine.
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Post by WillyCKH on Nov 17, 2015 23:13:42 GMT -5
I agree with Apoplast, the trick is to get as much light to your plant without differing the temperature too much!
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Post by danyoh on Nov 27, 2015 16:02:35 GMT -5
What is the rule for lights vs. square feet? I bought a 24" sunblaster but not sure if I need another one. Here is the tank I'm going to use (dimensions are LxWxH at 20x20x30)
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Post by Apoplast on Nov 28, 2015 15:12:41 GMT -5
Hi danyoh - Simple answer: I'm guessing that the LWH measurements you gave are in inches and not cm. I suspect your light setup will be just fine. That fixture should provide plenty of light at that distance for good growth in all but the most light greedy of CP. More detailed answer: When thinking about light, remember that distance is the main factor in calculating the loss of light, not area. However, area as a function of distance will work perfectly, but you can't forget the distance variable. The inverse square law is do to the diffusion over an area, but again this is just a factor of the distance. Now, you could calculate this. But in practice it is easier to directly measure the intensity of the light where your plants are growing. The law is most useful in understanding why getting your plants close to the light is beneficial.
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Post by danyoh on Nov 28, 2015 15:30:31 GMT -5
Thanks for the detailed answer Makes a lot of sense
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