TheOrganic
Well-Known Member
I'm glad I didn't get a LED a few years ago. I'm sure I would have regret that since tech wasn't up to par to what it compared to a 400w.
STAY AWAY FROM LED's!!!!!
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Calidadd
Active Member
I don't think this has been addressed, (I've read & looked & couldn't find anything) Can anybody tell me if there's a conversion from lets say MH/HPS wattage to LED wattstage? For example: x amount of LED watts = x amount of HPS watts. Is there a formula or is the technology so new that there's no info out there? Thanks.
virulient
Active Member
The conversion is subject of much debate, and to answer your question, unfortunately no, there is no conversion formula or anything like that yet. The problem is HID's are measured in lumens, which is visible light. But something around 80% of that light isn't usable in photosynthesis. This is where PAR rating steps in. The LED's have much more usable light, but not nearly as much power behind the spectra. In other words - penetration. We have learned from years of experience that HID systems can grow marketable (good, dense) buds all the way down to the growing medium on plants as tall as 4 feet. LED's, however, cannot penetrate this deeply, making the SoG (Sea of Green) or SCRoG (SCReen of Green) methods much more suitable.
So we have 2 lights, 1 very strong, and 1 not so strong. The strong one, however has much less "usable" light, whereas the not so strong one has almost nothing BUT usable light. Therefore we have no way of comparing the two besides side by side grows in extremely controlled environments with little to 0 variable. At this time, without a new, universal, unit of measurement, that takes into account penetration AND PAR values, we have no way of coming up with a conversion formula.
collective gardener
Well-Known Member
The Penepar rating should be expressed as a percentage relative to a known light...like an HPS burning a Hortilux bulb. This is BY FAR the most popular growing settup, and many people are well aware of what that can do. Penepar can be what percentage a selected light can do relative to a 1000 watt HPS with Hortilux Bulb. Example: a 600 watt light burning a hortilux would be around 60% as poweful as a 1000 watt hortilux, and therefore have a penepar rating of 60....a 250 watt HPS a rating of 25, a 600 watt LED a rating of???
Penepar...the NEW rating system. I love it. It should be based on real world testing. Perhaps the Penepar rating could be somewhat subjective...the average of at least 3 grower's experience with a light compared to the 1000 Horti. Perhaps the Penepar could have a preceding number showing how many growers weighed in on the Penepar ratiung, and therefore how "strong" the rating is. Example: If 48 growers weighed in on the "Bud Blaster" 500, and their average rating was that the Bud Blaster grows 74% as good as a 100 Horti, the Penepar rating would be 48 Penepar 74...or 48P74.
If we wanted to stay away fro anything subjective, Penepar could be the avererage of several factors: lumens, Par watts, etc...
Let's weigh in on Penepar.
Collective Gardener , i was already baked , above paragraph just comatised me
curly604
Well-Known Member
collective gardener :
i like your enthusiasm on my new found baby , but i think your focusing to much on the growers and brand of light , this should be a measurement to see the rating between hps and led's. like what would the penepar value of a 1000w hps be compared to a 1000w led unit
i like your enthusiasm on my new found baby , but i think your focusing to much on the growers and brand of light , this should be a measurement to see the rating between hps and led's. like what would the penepar value of a 1000w hps be compared to a 1000w led unit
iNFID3L
Well-Known Member
yeh, thats a good idea, coming on here and telling people to steer clear of led, just because you had some shit luck, nice one !I had 8 LED pannels in my 4 by 4 tent and they didnt do their job. Super slow growth. Switched to T5"s like 3 weeks ago and now my plants grow close to 3 inches a week vs the 1'' for the first 3 weeks!!! THEY are JUNK imho. Sorry my fellow LED growers, but this was in mt experiance
Toolage 87
Well-Known Member
You prob bought a junk kind or brand. The one I bought cost $20 and my plants seem to love it and they are bushing out more then before. I'm happy for using my 13w LED panel for veg. As for flowering I wouldn't use it.
collective gardener
Well-Known Member
collective gardener :
i like your enthusiasm on my new found baby , but i think your focusing to much on the growers and brand of light , this should be a measurement to see the rating between hps and led's. like what would the penepar value of a 1000w hps be compared to a 1000w led unit
That's why I was suggesting a baseline of the 1000 watt HPS. What if you assigned a penepar rating of 100 to a 1000 watt HPS burning a Horti, and then worked off of that? I'm just thinking so many of us know what a 1000 watt HPS will do in the real world. But, it's your baby...your call.
TedKorzenowskiJR
Member
"LEDs suck for plant growth"
Duh
Duh
Clonex
Well-Known Member
Thank you for your in depth and clever responce , we are nothing to a man of your stature , we are so lucky you graced us with your mere presance , i feel like a pimple on the "bum of humanity up to you" , if you have anything else to add , im sure like me , the others here are braced on the edge of their seats...."LEDs suck for plant growth"
Duh
collective gardener
Well-Known Member
I'm with Clonex. You clearly put some thought into that response. Now that I know your opinion, any thoughts of eventually using LED are out the door. I mean, shit, if you say they suck...they suck. Thanks for sharing your vast range of growing experience with us.
On another subject. Would you like to come work with me? I have a 20K grow op and I could use a man with your experience. I klnow it may be slightly under you, but I would bring you in as full partner right away. I could also do a signing bonus and relocation package. After seeing your comment, I just have to have you working with us. I'm not going to let the competition sweep you away. Just tell me what you want for a salary, and I'll make it happen.
Whenever you get a chance, could you read through this thread and maybe respond to some more posts? That would be great.
Clonex
Well-Known Member
No chance , i Pm'd him this morning - i have his name on a contract - get your own scientist collective
unclebobbyb
Member
LED has come a long way. Eventually, they will probably be the preferred choice for hobby growers. Right now though, good LED's are a little too expensive.