200$ bucks too spend and torn between led and t5 type

[Olive Drab Green]

Which is exactly what I said. You're adding more coverage (which is what PAR and lumens are) to the mix, but not more wattage. It's simply more effective lighting of that wattage.

PAR is not coverage, it's intensity. There's a difference.

 

[Uberknot]

He's wrong. It also increases PAR intensity as the lights overlap, as long as their dispersion patterns overlap along some kind of edge of each.

Kind of like my DIY light with 4 cobs on a 1 ft square piece of aluminum.
The grey is 2x2.

 

[Olive Drab Green]

Kind of like my DIY light with 4 cobs on a 1 ft square piece of aluminum.

View attachment 3752649

Good little PAR readout on a COB setup, yeah.

 

[TacoMac]

Ya I spent some time out today and I can get a 4 bulb fixture for 89 and 4 bulbs for 10 each 140$ ish with tax 20000 lumens rocking out!

That sounds like a winner. Do it.

 

[Olive Drab Green]

Coverage is the amount of area you can cover. PAR is the radiation intensity the plant can use, in micromols, in a square foot or meter? I forget. PPFD and the other one and all that shit. But you get it.

 

[RM3]

He's wrong. It also increases PAR intensity as the lights overlap, as long as their dispersion patterns overlap along some kind of edge of each.

He is still stuck in lumens instead of photons so the logic is warped

LUMENS MEAN ABSOLUTELY NOTHING TO PLANTS it is a measurement of how bright a light source is to humans

Think of photons as bullets and the lights as machine guns, 2 will always blow up more shit than one

 

[Walterwhiter]

Which is exactly what I said. You're adding more coverage (which is what PAR and lumens are) to the mix, but not more wattage. It's simply more effective lighting of that wattage.

I'm thinking of getting the fixture local and maybe ordering some higher end bulbs any suggestions. It's a high bay 4×2 btw.

 

[Uberknot]

Which is exactly what I said. You're adding more coverage (which is what PAR and lumens are) to the mix, but not more wattage. It's simply more effective lighting of that wattage.

But your electric bill is going to know......

 

[Olive Drab Green]

He is still stuck in lumens instead of photons so the logic is warped

LUMENS MEAN ABSOLUTELY NOTHING TO PLANTS it is a measurement of how bright a light source is to humans

Think of photons as bullets and the lights as machine guns, 2 will always blow up more shit than one

He did specifically say about "the eye test." Problem is, the spectrum the plant picks up is less than what the eye picks up. Needs to be narrowed to be understood.

 

[TacoMac]

PAR is not coverage, it's intensity. There's a difference.

Then you define it completely differently than the entire scientific community.

The number after PAR or MR indicates the diameter of the face of the lamp, expressed in 1/8ths of an inch.

In other words, an MR16 is 16 x 1/8 inches, or 2 inches in diameter.

A PAR20 is 20 eights-of-an-inch in diameter, or 2.5 inches.

A PAR38 is 38 eights-of-an-inch, so it is 4.75 inches in diameter.

http://lumicrest.com/par-mean/

By adding more bulbs, you by default increase the PAR (the SIZE/Coverage) of a given wattage.

 

[VTMi'kmaq]

Kind of like my DIY light with 4 cobs on a 1 ft square piece of aluminum.
The grey is 2x2.

View attachment 3752649

Im mesmerized.........

 

[Olive Drab Green]

Then you define it completely differently than the entire scientific community.



http://lumicrest.com/par-mean/

By adding more bulbs, you by default increase the PAR (the SIZE/Coverage) of a given wattage.

Dude, you're the only one on the wrong side of the scientific community, but I'll let you figure out what you're doing wrong.

 

[Olive Drab Green]

http://lumicrest.com/par-mean/

You fucking..

This PAR stands for Parabolic Anodized Reflector. We're talking about Photosynthetically Active Radiation.

 

[RM3]

Then you define it completely differently than the entire scientific community.



http://lumicrest.com/par-mean/

By adding more bulbs, you by default increase the PAR (the SIZE/Coverage) of a given wattage.

Wrong PAR

Photosynthetically Active Radiation (PAR) is measured by a silicon photovoltaic detector. This detector measures light in the 400 nanometer to 700 nanometer range. Some PAR sensors measure the PPFD of photosynthetically active radiation. PPFD stands for photosynthetic photon flux density and is used to quantify PAR.

 

[Uberknot]

Im mesmerized.........

LOL here is another one.....amazing what I come up with stoned....

 

[TacoMac]

I'm talking about lights and how lights work.. You're not.

 

[DonBrennon]

Im mesmerized.........

you know your weed's workin, when you look at a picture like that, wonder if he could do one for my 8 x 4, 32 cob, 128 mono array, that'd be trippy, pmsl

 

[Olive Drab Green]

I'm talking about lights and how lights work.. You're not.

Yes, we are. We all are. Except you. Look up Photosynthetically Active Radiation. Not "Parabolic Anodized Reflector." You have the wrong information.

 

[RM3]

I'm talking about lights and how lights work.. You're not.

For humans, not plants

 

[Cx2H]

I'm thinking of getting the fixture local and maybe ordering some higher end bulbs any suggestions. It's a high bay 4×2 btw.

Pretty sure the rain forest has 8 packs of 54w T5 3500k's for 36ish with free shipping.