2 lights more harm?
- Thread starter music64
- Start date
Airwalker16
Well-Known Member
All depends on the light. Why don't you tell us what it is.
CobKits
Well-Known Member
youd need to determine the actual flux
its probably less than 200 real watts and very low on umol/J
400W of high efficiency light in a 3x3 is on the upper end of flux and might cause problems
"400W" of 4 year old cheap china lights is prob 1/4-1/2 of the flux described above
its probably less than 200 real watts and very low on umol/J
400W of high efficiency light in a 3x3 is on the upper end of flux and might cause problems
"400W" of 4 year old cheap china lights is prob 1/4-1/2 of the flux described above
blowincherrypie
Well-Known Member
Whats your temps looking like? Thats what you really gotta watch out for with those imo
wietefras
Well-Known Member
These small purple fixtures need to be quite high above the canopy too. They tend to focus the light at a spot straight under the fixture. This gives a nice high intensity for them to take a single PPFD spot measurement and then claim the light is twice as efficient as HPS
In practice this hot spot also causes bleeching in plants.
In practice this hot spot also causes bleeching in plants.
temps are quite high 84 currently. thinking about getting one of these. https://www.htgsupply.com/products/htg-30-720w-cob-led-grow-light
https://advancedledlights.com/produ...ology-and-up-to-50-increase-in-par-intensity/
these sound good.
https://www.ledgrowlightsdepot.com/collections/black-dog-led-grow-lights/products/black-dog-led-phytomax-2-200-led-grow-light
heard of them for a while the 400 or 200 in a 2x3 tent sounds like it could do good
nfhiggs
Well-Known Member
Actually it does give some photometrics, which are quite poor by 2018 standards:
"At 210 actual watts and 320 μMol/s total photon flux" - thats barely 1.5 uMol/J
nfhiggs
Well-Known Member
If you look at the specs they give they are extremely average. That thing is a hair over 1.5 uMol/J efficiency - compare that to something like Fluence SpiderX which is 2.45 uMol/J efficient. Any decent Quantum board build is going to be in the same 2.4-2.5 uMol/J range as well as decent strip builds. Even my budget strip builds are at ~2.1 uMol/J
That thing ain't worth $100 bucks, much less the $600+ they are charging for it.
what is a light that you would recommend for a 2x3x6
i have an option to buy a 5 month old hlg 260w qb v2 4000k for $200 would it flower a 2x3 nicely
Humple
Well-Known Member
At that price, as long as it's in good condition, I wouldn't pass it up. A few guys here have flowered under 4000k, and I haven't heard any complaints.