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Lets thunk that through to detect any mental instability, if present. Randomblame has been growing shrubbery for 38 years. (his beard must be as grey as mine coz I started in 79) You "Yodaweed" have been growing shrubbery with LED`s for longer than Randomblame has been growing shrubbery. So...

I had a batch do that few years ago nail file (or sand paper) the bottom end of seed a bit to make them easier to open

Heat became a big problem in my room 14 yrs ago. Had to enlarge & crank up the extraction air flow which made a fair bit of noise. Changed to something that does the same job = fills my tin. Lower electricity bill & not having to replace bulbs every 6 months was great. No way will I change...

Because PPFD reveals that the old tech has turned into an outdated power hungry steaming pile of rectal extrusion? Make/Model Efficiency (PPFD/Watt) Fluence Spydrx 2.17 Optic 1 2.04 MIGRO system 2 HLG QB120 4K 1.92 Gavitta 1000W DE 400V Pro 1.39 Lumatek HPS 600W Dominator XXXL 1.3 Omega...

Informative Far Red video Really flash light meter (wickedly expensive)

I used your favorite lighting source 14 years ago & have no problem if the song Living In The Past by Jethro Tull is constantly going around in your head. Moan & bitch all you like if it makes you cream your why fruntz

4 packs of QB120 & QB132 are in stock I seem to remember you were rather keen on these https://www.amazon.com/s?me=A8OJ7VEXHXR8S&marketplaceID=ATVPDKIKX0DER

Dr Bruce Bugbee of Utah University and Apogee Instruments. 2014 research = best HPS & best LED are equal. Since then, best LED`s have continued to improve and are now 1.5x more efficient.

cheap infrared thermometer reading from top leaves will tell you how high something like less than 28 deg C (82F) is good

ChilLed has a custom spectrum with heaps more blue & red Their way of thinking came from users of white diodes (HLG etc) adding supplementary blue & red boards to boost the spectrum. I like their way of thinking. Am happy with the HLG 288V2 excellent plant growth but I reckon my future 2nd tent...

apparently they work really well I get 100% success rate with peat pots but probably much slower than that gizmo

Yes, can have too much light. HLG gave you good advice Re 1 panel in 2x2 I have 2 QB135 watt 288V2`s in a 2x4 = perfect footprint Drawing 270 from the wall but will go to a bit over 300 if cranked all the way up Plants are very young so started at 3 feet above for a few days and now 2 feet above

https://chilledgrowlights.com/our-products-services/diy-led-grow-light-kits/chilled-300w-linear-plug-and-play-kit

What does this mean "LED chips: Real Brand New Epileds Chips" (not second hand but years old stock bought at auction for next to nothing) Can I sacrifice the extra 40 watts & have this one instead...

I have 2 135V2 kits in a 2x4 = perfect fit Being able to dim each between 60-150 watts is very handy, have seen nearly 170 fully cranked https://horticulturelightinggroup.com/collections/kits/products/135w-qb-v2-led-kit

Optic has a clear lens which makes the light more like a torch light, spot light comparison with Migro diffused lens

Buggered if I know about the worm casting / pest link Sounds good if the pests don`t like it but do use worm castings all the time, mixed in the soil & mixed with water & poured on

I recommended one on page 2 post 33 305USD choice of 3500 or 4000 spectrum dimmable from 135 to 285 watts Many members have recommended heaps of other alternatives, in this thread & in the QB thread Choices from inefficient old tech to new tech You & your mate got no money & just like talking...

" I'm trying to grow weed not spend money" I am doing the same. Really impressed with the low electricity cost since changing to Quantum boards. All that light for sod all cost. Less heat & no need to replace bulbs = all good

I use 2x HLG QB288V2 in a 2x4 on their own single heat sinks. 2 boards on the triple heat sink would be about the same spacing as what I have QB288 optimal flower footprint is 2x2 Many single cobs like optic1 & Migro also also have 2x2 footprint