JBJ and Unibody Light

lostoften

New member
Just wondering if the 54W unibody light would be enough lighting for the 30 gallon rimless JBJ to allow you to keep SPS. Or if it is more meant for the 5 or 8 gallon versions.

Thanks,
Lost
 
I think the light would be perfect on the 30g for softies / LPS, but it's on the lower end of the range for SPS.

Using MH/T5 you would want 6 watts per gallon or more for SPS. LED's are more efficient so you can use a rough equivalency factor of 2x LEDwatts = MH/T5watts. This is a rough number, as LED efficiency can vary drastically depending on what LED's, drivers, optics, etc are used.

So using this formula, you are looking at 54w * 2 = 108w / 30g = 3.6wpg. That means this fixture is roughly equivalent to JBJ's 105w PC hood for the NC28. I grew SPS using that PC light, but it's not the best or fastest way to do it and you are limited to lower-light SPS.

For the price, you may want to look into dual-Kessils, AI SOL, or other fixtures. There are tons of LED's out there. The Maxspect and Radion are quite a bit more expensive, but are also more feature packed.
 
How about trying to make DIY LEDS. I think that's the cheaper route. I am actually in process of researching this method.
 
I think the light would be perfect on the 30g for softies / LPS, but it's on the lower end of the range for SPS.

Using MH/T5 you would want 6 watts per gallon or more for SPS. LED's are more efficient so you can use a rough equivalency factor of 2x LEDwatts = MH/T5watts. This is a rough number, as LED efficiency can vary drastically depending on what LED's, drivers, optics, etc are used.

So using this formula, you are looking at 54w * 2 = 108w / 30g = 3.6wpg. That means this fixture is roughly equivalent to JBJ's 105w PC hood for the NC28. I grew SPS using that PC light, but it's not the best or fastest way to do it and you are limited to lower-light SPS.

For the price, you may want to look into dual-Kessils, AI SOL, or other fixtures. There are tons of LED's out there. The Maxspect and Radion are quite a bit more expensive, but are also more feature packed.

So if i use 25x3w cree XP leds that equals to 150w MH. Is that enough light to grow anything?

What is the radion output compared to MH ?
 
So if i use 25x3w cree XP leds that equals to 150w MH. Is that enough light to grow anything?

What is the radion output compared to MH ?

Sounds just about right. 150w halides on the 28g definitely allow you to grow anything, I think you will find similar success with the LED's.

Radion is 130w of LED, and EcoTech says it's roughly equivalent to a 250w halide. For reference, mine is running at 65% intensity currently.
 
Thanks, I just liked the look of it. However I know absolutely nothing about LED's. Other than the bulbs last a lot longer and they are more efficient.
 
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