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hey bud, I got a par meter, the hydrofarm model. My hacked lux meter is exact as the PAR meter.I have found tho, need to add 10% from the value. This is from the difference of the Appogi PAR meter, that I researched and came to the conclusion. at 40 watts, 880 PAR @ 7 inches 440 @ 10 in 330...

probably the same as you would horizontal, but using a stick to make sure your getting the same consistent distance while mapping it out. and use sunglasses or eye protection. probably will take 2 people to do it. but keep in mind that you wont have the floor surface to reflect light, so your...

dang man, thats alot of cash for some numbers, but heck, if you can whyyyyy not, lol,, intested to see the results now, ..

no clue man, but 1500 is to much, 800 is sweet spot with LEDs,

the orange one,? dr. meter LX1330b is the one i use. use the 60 conversion, you should get a great idea of the PAR.

what lux meter are you using? The iphone ones are garbage. The Lux meter i use is the best from what ive. Your using 3000K? You want to divide by 60

You can, thats up to you. I do it this way so i dont have to crunch the numbers, and can move my meter around and read it just like a PAR meter would. OCD gets the best of me sometimes,lol..

It diffuses the light,

alot of people here thought I was BSn about it, but I have proof now, its exact. I can move it to the floor, directly under the cob, anywhere i put it, its dead on accurate to the PAR meter. These hydrofarm meters just convert Lux. I use 2pc 3500K and 2pc 4000k cobs, so i use the conversion...

yeap, takes 1 minute, drill a hole, cover with tape, done.

Man, telling ya, Get the Dr. Lux meter, drill a 3/8 hole in the cap, and scotch tape over the hole. I can give you the brand i use ( scotch tape) I just went over my entire grow area, and my lux meter is dead on with the Hydrofarm PAR meter. From my research, the Hydrofarm is off from the...

Stuff is awesome, I use it as a suppliment with my PH perfect every watering, also i use recharge with them both. Everywatering. Megacrop seemed to be missing something, but using them together, seems perfect, also use calmag,lol..

smh, unreal man,

My hacked Lux meter, is exact to my PAR readings, so thats awesome, because my lux meter is more stable in readings. going to do a mapping of the PAR, and send this sucka back for refund, saved $130, lol..

good stuff then, great growin to ya man,

i agree, if anything the farthest outside might lack intense photons, but overall, what you gain on the inside will make it not even a factor. unless of course the grow is in the middle of a warehouse with 1-2 feets from edge to wall. Im waiting on my PAR meter, should be here in 10 minutes...

Yeah, i totally forgot to mention that myself, bitchin rig for sure.

you also have to keep in mind you may need a humidifier, especially in winter months. home heating drastically reduces humidity in a home. RH under 40% will totally stop growing. 60-70% daytime( lights on) 40% night time ( lights off )

im actually doing this today myself,

it must be at least 12inchs from the canopy to get anything worth the time. 15 inches if you put a reflective material around THE LIGHT, so it condenses the lumens in a better fashion. Light a big flashlight.