Medicgrow fold-8 V1 questions

[Fenderbender]

Open the pod bay doors Hal!

I'm sorry Dave, I'm afraid can't do that.

 

[Delps8]

Interesting PPFD maps on these lights.

"ed light can make up 70% of your spectrum before you have any issues" - HPS is 4% blue. This is from a Bugbee video of his research and he has mentioned it in one of his (many) vids.

Also, check out the spectrum of the Mars SP3000R that I posted up thread. There's no way to measure the % but with the Mark IV Eyeball, it comes in as well under 30%. I have to assume that Mars is not going to sell a light that will cause issues.

Re. the 80 watt lights. PPFD map is your friend.

Spider:

Mars

It looks like the Spider puts out more light than the Mars but behold the "power" of using a non-standard grid. Mars is using 6" squares (the standard), Spider isn't. Anyone want to convert the Mars map to compare it to the Spider map? Not me!

That's a trick that companies use to fudge their PPFD values a technique that a companies use when reporting their PPFD values.

I didn't test the Spider - got it out of the box and got it in the tent. Rough numbers are that I"m getting 300µmol at 10" which is inline with their PPFD map. I've got to admit that didn't even check output along the length of the light.

Did you do PPFD maps for all of those lights? If so, that would be a really good write up for the "Grow Lighting" forum.

 

[waytoofaded]

Interesting PPFD maps on these lights.

"ed light can make up 70% of your spectrum before you have any issues" - HPS is 4% blue. This is from a Bugbee video of his research and he has mentioned it in one of his (many) vids.

Also, check out the spectrum of the Mars SP3000R that I posted up thread. There's no way to measure the % but with the Mark IV Eyeball, it comes in as well under 30%. I have to assume that Mars is not going to sell a light that will cause issues.

Re. the 80 watt lights. PPFD map is your friend.

Spider:

Mars

It looks like the Spider puts out more light than the Mars but behold the "power" of using a non-standard grid. Mars is using 6" squares (the standard), Spider isn't. Anyone want to convert the Mars map to compare it to the Spider map? Not me!

That's a trick that companies use to fudge their PPFD values a technique that a companies use when reporting their PPFD values.

I didn't test the Spider - got it out of the box and got it in the tent. Rough numbers are that I"m getting 300µmol at 10" which is inline with their PPFD map. I've got to admit that didn't even check output along the length of the light.

Did you do PPFD maps for all of those lights? If so, that would be a really good write up for the "Grow Lighting" forum.

My response was to the person worried if adding the bars to their growlight would cause issues with their spectrum. 70% is a safe estimate before photobleaching occurs.

The Mars light looks really interesting, it's ashame they don't have it in Canada and I don't feel like paying import and shipping from overseas.

As for the VG80r vs the GlowR80, I didn't even take a look at the ppfd map, my comment was made from my experience and by eye. The strips beneath both lights are the same thing supplied to both of them by LG, the only difference I can find is the lens, and that the MarsHydro light can be angled while hung with the thin metal bar, the SpiderFarmer cannot do that.

I don't have any brand loyalty to any of these companies, I'm sharing my unbiased experience, I'm not trying to discredit your experience (just thought I'd mention it incase it comes off that way)

 

[Delps8]

So, how much PAR do those deep red lights throw, im not looking for a light canon haha just curious if theres a balancing issue with two different lites at the same time…

Not an issue.

Plants do react to light but they don't sense light in the way that an animal does. It's just photons hitting a leaf and hormones within the plant will react and may cause a leaf to shift its position.

The different wavelengths of the photons cause reactions in different types of chlorophyll in the plant and green photons go deeper into a leaf. With plants, there's no ability to do anything but react directly to the stimulus of the photon whereas an animal perceives light using eyes and then the brain which then decides to lay out in the sun until it gets a sun burn.

You can use any combination of lights and spectra that you choose. The only real issue is that HPS generates energy in the infra red band (>=780nm) which may heat the plant. Other than that, it's just more light that gets turned into food.

 

[Delps8]

My response was to the person worried if adding the bars to their growlight would cause issues with their spectrum. 70% is a safe estimate before photobleaching occurs.

The Mars light looks really interesting, it's ashame they don't have it in Canada and I don't feel like paying import and shipping from overseas.

As for the VG80r vs the GlowR80, I didn't even take a look at the ppfd map, my comment was made from my experience and by eye. The strips beneath both lights are the same thing supplied to both of them by LG, the only difference I can find is the lens, and that the MarsHydro light can be angled while hung with the thin metal bar, the SpiderFarmer cannot do that.

I don't have any brand loyalty to any of these companies, I'm sharing my unbiased experience, I'm not trying to discredit your experience (just thought I'd mention it incase it comes off that way)

Last point - Oh, no, not at all. I very much appreciate the info.

Re. single source - good to know. LG's got a good rep and they do look very much alike.

"the MarsHydro light can be angled while hung with the thin metal bar, the SpiderFarmer cannot do that." - that's good info to pass along. I wasn't aware of that and that could come in handy for some growers. If they're using the same OEM, then the cover that Mars is using so that you can angle it is eating a few µmol. Fair trade.

"It's ashame they don't have it in Canada and I don't feel like paying import and shipping from overseas." - understand that completely.

"70% is a safe estimate before photobleaching occurs." - photobleaching of the flowers? I'd be interested in your experience with that.

Bugbee has talked about that. He recounted that it was cosmetic, only occurs at very high PPFD's, and with lights with very high amounts of red. I appreciate you bringing the up. I had forgotten about that. Bugbee narrowed it down to those conditions occurring before the buds form, IIRC. Does that ring a bell with you?

PPFD readings from today (fairly typical) but I added the R80's after the flowers had started to form so.