SonsOfAvery
Well-Known Member
That'll be my birthday present sorted then! Thanks for the update 
-boring 'ol 230w 154lm/w led strip build
- Thread starter iHearAll
- Start date
dopeonarope
Well-Known Member
i get what your saying - but having no meter to take meaningful measurements with - Im not fussed what metric is used here as it is bright enough in there to give seedlings a hard time and it has performed well flowering in a closed tent. It's not an insistence on using watts per sqft on my part here, simply that its as good as any other when I dont have the means of measuring light output accurately. All I'm driving at is that 30-ish watts per sqft of TCI strips works well (for me) in a small tent.
As mentioned by @SonsOfAvery we're all talking about a particular spec product here so the comparison with a 400w blurple claiming double the wattage is kind of irrelevant no?
If the grow space wasnt enclosed then it would be a different ball game and I would go as far as to recommend a different product altogether or at least seriously re-think how I would arrange strips like these.
Hairiest_Stamen
Well-Known Member
Not trying to be argumentative. .. but you quoted something like 30w/sq ft, correct?i get what your saying - but having no meter to take meaningful measurements with - Im not fussed what metric is used here as it is bright enough in there to give seedlings a hard time and it has performed well flowering in a closed tent. It's not an insistence on using watts per sqft on my part here, simply that its as good as any other when I dont have the means of measuring light output accurately. All I'm driving at is that 30-ish watts per sqft of TCI strips works well (for me) in a small tent.
As mentioned by @SonsOfAvery we're all talking about a particular spec product here so the comparison with a 400w blurple claiming double the wattage is kind of irrelevant no?
If the grow space wasnt enclosed then it would be a different ball game and I would go as far as to recommend a different product altogether or at least seriously re-think how I would arrange strips like these.
You've admitted that you don't have any way of telling what ppfd you're getting,
and you have no way of measuring lumens so where did the notion that 30w/sq ft would be good for flower come from without some ppfd #s, as I haven't seen anyone here talking about w/sq ft.
Sounds an awful lot like one of those rules of thumb that just is nowadays a stab in the dark at best.
As it turns out, depending on how your 10 strips are configured you're at least getting 700 ppfd, as my previous 8 strip setup was yielding decent numbers from less than 20" heights.
Hairiest_Stamen
Well-Known Member
Btw if you have a grow log please pay the link always interested to see how grows with these lights are progressing.i get what your saying - but having no meter to take meaningful measurements with - Im not fussed what metric is used here as it is bright enough in there to give seedlings a hard time and it has performed well flowering in a closed tent. It's not an insistence on using watts per sqft on my part here, simply that its as good as any other when I dont have the means of measuring light output accurately. All I'm driving at is that 30-ish watts per sqft of TCI strips works well (for me) in a small tent.
As mentioned by @SonsOfAvery we're all talking about a particular spec product here so the comparison with a 400w blurple claiming double the wattage is kind of irrelevant no?
If the grow space wasnt enclosed then it would be a different ball game and I would go as far as to recommend a different product altogether or at least seriously re-think how I would arrange strips like these.
JSheeze
Well-Known Member
Pic?
I'm astounded and excited, maybe don't need as many as I thought! Less money!
dopeonarope
Well-Known Member
Always good when things start with I'm not trying to be argumentative... but
When I made my comment on 30watts being about right per sq foot it was in context to previous comments about a product with the same spec as everyone else in here - It think I also qualified it by noting it was in my space. I didn't approach this build thinking "I need 30 watts per sqft or "x" PPFD. I think that's the difference in thinking here.
My point is that I dont need to know PPFD or lumens or watts or anything else if the heat is manageable and the flowers are good. Applying a metric doesn't make something perform better or worse it just gives you a reference. This is useful when crunching numbers or planning but I really just went in blind, built a light on aluminium sheet approximately the same size as my grow area and switched it all on.
Ive grown under a few of different types of lighting and even more so outside using the sun and that's my basis for saying these lights perform well, again, in my space. The yields and quality are good for the amount of power and setup cost and that is really all that matters as far as I'm concerned.
I do this to grow good pot, I don't care about the data
I dont keep grow logs but I chuck the odd pic up during flowering. I'll try and remember to chuck a couple in here when I get to that point this run
JSheeze
Well-Known Member
I don't have $$ for ppfd meter, but if I'm careful to select correct color temp when choosing lights (so that it's in the plants absorption range), and I understand that lumens is a measurement of intensity despite wattage, I can compare and make a sensible judgment between lights without a PPFD meter. That is why I prefer lumens/sq'.
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I'm reading that somewhere around 5k-6k/7k(ish) lm/sq' is what you guys are having success with in enclosed grow tents.
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If I decide to go TCI 23W Linear LED I'll prolly shoot for 7k-10k/sq', considering it's not enclosed.
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I will NOT do 17k lm/sq' like I had estimated lol, thanks for the input everybody!
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Lets say cost doesn't matter, open warehouse, only quality matters, electric use is secondary concern. HPS or LED?
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I'm reading that somewhere around 5k-6k/7k(ish) lm/sq' is what you guys are having success with in enclosed grow tents.
.
If I decide to go TCI 23W Linear LED I'll prolly shoot for 7k-10k/sq', considering it's not enclosed.
.
I will NOT do 17k lm/sq' like I had estimated lol, thanks for the input everybody!
.
Lets say cost doesn't matter, open warehouse, only quality matters, electric use is secondary concern. HPS or LED?
Humple
Well-Known Member
You can get more for your wattage with LED, but if cost (either long-term or short-term) doesn't matter, and you can set it up in any way that suits you, I'd say it makes no difference. Either will grow great weed.
wietefras
Well-Known Member
If you want to guesstimate the PAR values, divide the lumen figures by 69 (for the 3000K version) to convert from lumen to PPF per strip. Multiply that by the number of strips and divide by the square meters of the grow to get an estimate of average PPFD (umol/s/m2).
SonsOfAvery
Well-Known Member
I'll post a pic over the weekend when I have a bit more free time on the evenings, my lights are on overnight now while I'm flowering.
SonsOfAvery
Well-Known Member
@JSheeze
Here's my flowering tent couple weeks into 12/12. 4 X Bodhi's soulmate and 2 X Holy Smokes strawberry diesel. (plus some other small freebie plants in the front)
I'm happy with how full it is, will be implementing a scrog for my next grow (blue dream cbd & S.A.D CBD)
I have added a Vipar ufo (100w actual) in the middle of my frame, just until I can buy some more of these strips.
Here's my flowering tent couple weeks into 12/12. 4 X Bodhi's soulmate and 2 X Holy Smokes strawberry diesel. (plus some other small freebie plants in the front)
I'm happy with how full it is, will be implementing a scrog for my next grow (blue dream cbd & S.A.D CBD)
I have added a Vipar ufo (100w actual) in the middle of my frame, just until I can buy some more of these strips.
macmanaman
Member
some leb 27 x northern lights 12 /12 all the way partycup seedrun .
under two 23 watts 3000 k
no stretch at all .
3 males one female .
i hope for about 35 fresh seeds .
greetings from the beautifull holland
under two 23 watts 3000 k
no stretch at all .
3 males one female .
i hope for about 35 fresh seeds .
greetings from the beautifull holland
nfhiggs
Well-Known Member
Way too complicated.. KISS:
https://imgur.com/OnlvJjm
Six 3000K Samsung F strips @ 150 W. Multiply times 4 for a 4x4 or 5x5 space.
Budzbuddha
Well-Known Member
I love pacman !
The Sex Pistils
Member
Even KISS-er: The Minimalist. (AKA, The Lazy) Two half-sized jelly roll pans with 5 3000K TCI strips, mounted with thermal tape, hung by 1/2"x4" eye bolts, hanger straps with drivers zip-tied, Wago connectors (still exposed, but hey, I'm the only one who's supposed to see them) and ground connected to the pan. 2'x2'x6' tent, one Blue Magoo BX2 plant. (Started with three, but two of them went hermie on me after I stressed the shit out of them by too heavy defoliating and adding too much light at the same time.) Max temperatures are ~120F on the drivers and 125F-130F on the lights. I may add a fan or two later, we'll see. The jelly-roll pans were an idea I stole from a guy on one of the other forums (THC farmer, I think), Baudelaire, who sells kits with Samsung strips.
I'd like to add some UVB to this, probably just some reptile lights or something comparable. I was wondering if you guys have any suggestions? (Size/wattage, especially--thanks.)
Thank you for all the who posted in this thread, without your input I would not have this great light for $120...
get lux meteri get what your saying - but having no meter to take meaningful measurements with - Im not fussed what metric is used here as it is bright enough in there to give seedlings a hard time and it has performed well flowering in a closed tent. It's not an insistence on using watts per sqft on my part here, simply that its as good as any other when I dont have the means of measuring light output accurately. All I'm driving at is that 30-ish watts per sqft of TCI strips works well (for me) in a small tent.
As mentioned by @SonsOfAvery we're all talking about a particular spec product here so the comparison with a 400w blurple claiming double the wattage is kind of irrelevant no?
If the grow space wasnt enclosed then it would be a different ball game and I would go as far as to recommend a different product altogether or at least seriously re-think how I would arrange strips like these.
Humple
Well-Known Member
Any pics of the underside? Let's see those strips!
The Sex Pistils
Member
Here you go.
