Yeah I see higher yields as well, but only with longer veg times (and other strains) which means at least one fewer run per year, and significantly lower annual yield.Rocket Soul wrote: ↑Thu Nov 07, 2019 8:31 amHi OP
I think you will get those numbers a lot higher, having seen yyields around 2g/watt done without breaking too much of a sweaat.
Does the light mover raise/lower? Our approach was to completely cover cannopy in low hanging leds (we use fotop boards, lm561c and with CO2, PPFD around 800-900 and about 30w per square foot) and it did really well.
If the light mover is hard to raise and lower it means you will be missing out on dialing in that part.
I allways thought light movers wasnt really for leds, more HID so you could hang a bulb low but not fry the cannopy. With led you can achieve this in easier ways thru design.
Obviously it has tthe drawback of not being able to leave the grow on its own as you will need to raise the light several times. But if your chasing g/w is the way to go.
Whaat did yield look like on a g/ square feet?
Light movers do not raise or lower. The light hangers do of course. I keep the lights 7" above the canopy. I also have around 820-930 ppfd, depending on which part of the canopy I measure. I can turn the lights up to 1000PPFD If I wanted, but I do not run CO2 in this room and thus my efficiency would decline past what I find acceptable. I used CO2 for years in my DWC room and the economics of using CO2 are interesting. It seems not many actually check their return on investment. Personally I would not run CO2 unless I had over 950 PPFD. Not that you wont grow more, you will. But the cost to produce each gram rises.
For the record, we do get higher yields with other strains. Comparing Gavita grown mimosa to Gavita grown Ice cream cake for example, the ice cream cake was a far better yeilder. I don't have the data on hand at the moment.
Hanging an HID light closer to the canopy is not really advantageous. If you use a light meter you can see why. They already produce high enough PPFD at the height the are intended to be placed, at least in the middle of their footprints. Hanging them lower changes the angle of incident at which the light rays strike the canopy, favorably, but this is a tiny factor. However hanging HID's lower can really hurt you when it comes to overlapping the footprints. To provide an even lighting over the entire canopy when using HID's the lights have to be at both the correct distance apart and the correct heights. Moving the entire bank of lights allows you to cover more canopy space with the same amount of light. That is the advantage of light movers. They also allow the lights to penetrate the canopy by providing light at varying angles to the canopy.
The grams/sq foot was (redacted) = 27.54 that's including some "accessory/head stash" plants that were not planted in the garden beds. That's dried and trimmed, not counting trim in the weight.
I can do that 5 times a year by going from a cutting to rooted in a 6" pot, in a separate space (LED lit of course) before planting in the garden beds.
What I am truly chasing is grams/kwhr. Shit, (redacted) sometimes grows 3 pounds per 1000 watts. That's 1.362 grams/watt, but his grams per kwhr would be horrible because of the veg time required.
What other tips do you have for massive yields?