300W LED Shootout: 12/12 from seed - featuring Super Silver Haze (Mr. Nice Seeds)

hey Jozo-sha gl with the test. what i'd like to know is what system are you comparing to GrowGSL's 300 watt pro-bloom?

akaman;bt2481 said:

hey Jozo-sha gl with the test. what i'd like to know is what system are you comparing to GrowGSL's 300 watt pro-bloom?

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Hello, akaman!



The comparison unit is a 12 band 300W (listed) using 3x1w LEDs, and the actually current draw is 395W. For this test, the unit will be referred to as "Brand X". Since "Brand X" is boring, however, I will call the unit "Josh".

Yeah, growing from seeds as opposed to using clones from the same mother makes a real comparison problematical - you'll be left wondering if any differences in results are from the lights or from the plants, if one is better than the other for same, if one could have taken more nutes than the other (and thus perform better than it did) for same, et cetera.

Would be far better and any results more usable (and scientifically correct) to use clones, but you could lessen the issue by switching your grow method to at least use multiple females (Half a dozen? Not enough to give "statistical accuracy," lol, but probably close enough for most and would probably allow you to not have to qualify the results with too many disclaimers.) for each side of the experiment. Although that might be tricky in this case because (I'm told) that small-wattage LED panels don't really have much of a core-footprint to speak of.

But it'll still be interesting to follow along.

TorturedSoul;bt2484 said:

Yeah, growing from seeds as opposed to using clones from the same mother makes a real comparison problematical - you'll be left wondering if any differences in results are from the lights or from the plants, if one is better than the other for same, if one could have taken more nutes than the other (and thus perform better than it did) for same, et cetera.

Would be far better and any results more usable (and scientifically correct) to use clones, but you could lessen the issue by switching your grow method to at least use multiple females (Half a dozen? Not enough to give "statistical accuracy," lol, but probably close enough for most and would probably allow you to not have to qualify the results with too many disclaimers.) for each side of the experiment. Although that might be tricky in this case because (I'm told) that small-wattage LED panels don't really have much of a core-footprint to speak of.

But it'll still be interesting to follow along.

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Well, given that I have 15 regular beans of SSH to work with, perhaps to eliminate genetic variations in such a small sample, pop all 15 and go 4 females each?

I think this will not be problematic, as I have decided, after all, to use the 0.8 gallon (3 liter) Air Pots for this...let's do some maths:

My tent interior floor dimension is 34" x 53", so splitting that will result in roughly 26" wide and 34" deep to play with per LED unit. The 3 liter Air Pots are 6.3" in diameter, so fitting 4 into that area will not be an issue. Going 12/12 from seed ensures minimal side branching, and from the specifications for both lights (one specifies a 33.6" x 30" core saturation, the other 39" x 27").

For what it's worth, I wouldn't consider either of the units in this comparison as "small-wattage LED panels"; I save that moniker for the 90W 'UFO' and 45W fleabay stuff

I'm honored to have you join me TorturedSoul, your input and constructive criticism are very welcome here.

" 12 band 300W (listed) using 3x1w LEDs, and the actually current draw is 395W."

Wait... On the actual draw, it's rare to see an actual draw that is even close to the combined diode specs, let alone over. Which leads me to ask, that's including the fans right? Otherwise it'll run bright, but not for very long.

endive;bt2487 said:

" 12 band 300W (listed) using 3x1w LEDs, and the actually current draw is 395W."

Wait... On the actual draw, it's rare to see an actual draw that is even close to the combined diode specs, let alone over. Which leads me to ask, that's including the fans right? Otherwise it'll run bright, but not for very long.

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Unknown, but that's the assumption I'd make. I've no "Kill-A-Watt" unit to plug either into, so I've just been going by the supplier's specifications.

I'm in!!!

Welcome, GT -- it is a distinct honor to have you join me on this journey!

GodsTrichome;bt2490 said:

I'm in!!!

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