The Candlelight Club: Support Group For Those Running 400W & Less

Heh yeah I tried that one summer with some Panama x Malawi. I have some health problems which made the extra heat unbearable for me though. Maybe even a little life threatening sadly. I basically start throwing up non-stop for a week(or two) and get massively dehydrated. Nearly caused me a heart attack recently, so not willing to give up the AC to run the lights again.
Growing certainly isn't worth killing yourself over.

We run the ac in our living room window, grow is in the northwest corner bedroom and gets sun for many hours in the summer. Only one window and if I did run ac in there it would be in direct sunlight and an overall waste of money. Even opening the bedroom door during lights on forces the ac to work very hard.
 
Yeah I am kind of in the opposite boat, I have to shut it down in the summer because the heat becomes too intense. I haven't ever really tried to sacrifice quality for quantity though, because then I just end up smoking more to get the same relief.



Okay, now this has my attention. Do you have a journal I can read through? Those lights look a bit fancier than your run of the mill MH/HPS setup. Are they COBs?

A little lighting conundrum...

So my last cycle with Alaskan Thunderfuck, I had to put my T5 in my tent at the same time so I was getting 515 watts. (Ok I'm breaking 400 watts, but it's my thread!) But the reason why I did so was because my plants stretched off on me, and I knew I wouldn't be able to get light penetration to the lower growth so I hung the T5 on the side to light the lower branches. I still got about 258 grams of smokeable bud, so I figure that at pretty much exactly .5 GPW.

I wonder if I got them to not stretch out so much, say keep them at 2 ft max, if my CMH alone would have been able to accomplish the same yield. I was pretty impressed it did so well even so high up, but I could noticably tell it got much dimmer it got in the tent without the T5 too.

I still can't really add any more watts so I have been deliberating about running the T5 and CMH side by side. I usually use the T5 in a separate veg tent, attempting to cycle but never really got the hang of it. Seems like it might be better used in conjunction with the CMH, but I also think that the CMH would have done well too if I had trained the plants better.

Hey Fert, I do have a journal, it's the perp link in my sig, we are coming up on our 3rd harvest. I do run cobs, I have a fixture running 4x50w 3500k and 2 660nm Osrams for up to 250w, and another fixture running 2x100w 3000k for up to 210w, but I don't run them all out. I do use co2.

IDK, watts per ?, penetration is good, I just try for really decent bud using organic nutes in amended soil for tasty shit, yield is a product of whatever the plant gives me. Last two plants were 11.5 ounces of bud dry plus the trim. so almost a g / watt of bud. But both of those plants were vegged 80-105 days.

If it were not for head and burnt bud this would be simple.
 
{...}the reason why I did so was because my plants stretched off on me, and I knew I wouldn't be able to get light penetration to the lower growth so I hung the T5 on the side to light the lower branches. I still got about 258 grams of smokeable bud, so I figure that at pretty much exactly .5 GPW.

I wonder if I got them to not stretch out so much, say keep them at 2 ft max, if my CMH alone would have been able to accomplish the same yield.

I'd reckon so, assuming that it's a relatively productive strain (IDK). Your effective canopy thickness was the distance from the top of the tallest plant to the lowest bud in the grow space. Had you kept the undergrowth pruned and trained the upper mass to be on a flat plane, you could have kept that single 315-watt light closer to the majority of your buds, methinks - and possibly even managed to harvest more than you ended up getting. (If all other conditions were 100%, of course - as usual, if light-energy wasn't your limiting factor, then... not so much ;) .)
 
I'd reckon so, assuming that it's a relatively productive strain (IDK). Your effective canopy thickness was the distance from the top of the tallest plant to the lowest bud in the grow space. Had you kept the undergrowth pruned and trained the upper mass to be on a flat plane, you could have kept that single 315-watt light closer to the majority of your buds, methinks - and possibly even managed to harvest more than you ended up getting. (If all other conditions were 100%, of course - as usual, if light-energy wasn't your limiting factor, then... not so much ;) .)
You think if I had cut the lower bud sites off the ones up too would have grown bigger buds? In the past I feel like I have always taken off too many flowering sites without the ones left compensating, so I didn't want to do any pruning.

This cut is pretty hearty, I popped the seed out doors and it thrived in very harsh conditions. I got 12 oz off one plant that was going through some bad deficiency in sub-par near clay-like soil, so I figure it has to be strong under more optimal conditions.
 
You think if I had cut the lower bud sites off the ones up too would have grown bigger buds?

Would have? IDK. Could have, maybe. A plant, receiving "X" amount of light-energy and "Y" amount of nutrients, is only going to produce a certain amount of bud. I prefer mine all come from somewhere close to the light source. . . .
 
Would have? IDK. Could have, maybe. A plant, receiving "X" amount of light-energy and "Y" amount of nutrients, is only going to produce a certain amount of bud. I prefer mine all come from somewhere close to the light source. . . .
I wonder how much plant size comes into it though. If plant X is half the size of plant Y, but plant X has twice the light energy, with equal water/nutrients, does plant X yield the same amount as plant Y?

I feel like it can't work like that, because then people could just flower a clone of a plant and expect it to produce as much flower as it's mother did in one massive flower. I have seen people grow quite massive flowers as clones straight into 12/12, but it definitely wasn't a 1:1 ratio.
 
If plant X is half the size of plant Y, but plant X has twice the light energy, with equal water/nutrients, does plant X yield the same amount as plant Y?

<SIGH>

Yes. No. Sometimes. Maybe. Even more, but not always.

Discussing generalities does tend to have the occasional drawback.
 
I guess I should join this thread, used to grow during the 90's using 400 w hps
Started up again now that Canada has become legal Did lots of reading & bought some Cree 3070 cobs to build a diy light. Started with 1 cob & 30 w driver, later set up 4 @ 30 w for a total of 120 Watts. First plant I grew off the 1 cob wielded 32 grams & I left the small lower bud to reveg edit : in no were near ideal conditions cold basement 65 f day night 55 f 10- 15 % humidity
 

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I guess I should join this thread, used to grow during the 90's using 400 w hps
Started up again now that Canada has become legal Did lots of reading & bought some Cree 3070 cobs to build a diy light. Started with 1 cob & 30 w driver, later set up 4 @ 30 w for a total of 120 Watts. First plant I grew off the 1 cob wielded 32 grams & I left the small lower bud to reveg edit : in no were near ideal conditions cold basement 65 f day night 55 f 10- 15 % humidity
Those seem like strong little lights for sure. I haven't been interested in them, but whenever someone mentions the costs of building them it kind of turns me away. I've heard people say you need $400-$500 to put one together.
 
I lucked out & found some from Romainia for about $28 can each shipped
Yeah when I first started looking they were like $ 57 us
 
Umm feel free to not respond if the conversation has become that tiresome for you.

No, it's just... When someone posts a question like that, there are lots of answers that could be correct. There are just so many variables that would affect things. The <SIGH> was due to thinking the answer(s) to the question would not be helpful - and it's evident to me that you want to improve your game.

Apologies for not being clearer. It was hours past my bedtime.
 
No, it's just... When someone posts a question like that, there are lots of answers that could be correct. There are just so many variables that would affect things. The <SIGH> was due to thinking the answer(s) to the question would not be helpful - and it's evident to me that you want to improve your game.

Apologies for not being clearer. It was hours past my bedtime.
No problem, didn't wanna be a hassle. I see what you mean now, thanks. It seems the only way to really get answers, practically, would be to do side-by-side grows to test each variable. Otherwise it's a long road of learning cycle-by-cycle.

I lucked out & found some from Romainia for about $28 can each shipped
Yeah when I first started looking they were like $ 57 us
Sounds a little more affordable. They need some kind of driver as well don't they? I know the chips are on board, so is it just a matter of wiring leads from one power source in daisy-chain to each light? I know there are a ton of guides to do it, but I haven't really got an "in a nutshell" summation of it in my mind still. The heatsinks seem pretty straight forward, I have experience with those working on desktop computers so I know where I can get some fans and thermal paste to make sure they work well.
 
Sounds a little more affordable. They need some kind of driver as well don't they? I know the chips are on board, so is it just a matter of wiring leads from one power source in daisy-chain to each light? I know there are a ton of guides to do it, but I haven't really got an "in a nutshell" summation of it in my mind still. The heatsinks seem pretty straight forward, I have experience with those working on desktop computers so I know where I can get some fans and thermal paste to make sure they work well.
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I haven't seen the seller on ebay anymore. Yes need drivers I bought 30 w for each (can go up to 117 watts) read they will last much longer if you run them soft Could also go 1 big driver that is adjustable to power more than 1 . I went cheap w $7 drivers for each May yet invest in an adjustable driver. Used computer fans & heat sinks ( want to try cast some pin heat sinks, so I can lose the fans) mounted it on some conduit I had kicking around. Yes called cobs (chip on board). the new Quantum boards have mini cobs
 
For practice I dismantled an old Mars300 blurple led, mounted a Chinese 50w cob on the mars heatsink, used the good Mars driver and fan. I rigged it all up to I prove to myself I could do it with only what I read online and no real world experience with electricity and voltage and all that stuff.

It is supposedly 1100 Kelvin which supposedly includes deep and far Red light. I run it for about an hour before lights out until an hour after lights on. I have proof tested it by running 11hrs daily for about 4-5 days. House didn't catch on fire, experience resulted in success.
 
Sounds a little more affordable. They need some kind of driver as well don't they? I know the chips are on board, so is it just a matter of wiring leads from one power source in daisy-chain to each light? I know there are a ton of guides to do it, but I haven't really got an "in a nutshell" summation of it in my mind still. The heatsinks seem pretty straight forward, I have experience with those working on desktop computers so I know where I can get some fans and thermal paste to make sure they work well.

I haven't seen the seller on ebay anymore. Yes need drivers I bought 30 w for each (can go up to 117 watts) read they will last much longer if you run them soft Could also go 1 big driver that is adjustable to power more than 1 . I went cheap w $7 drivers for each May yet invest in an adjustable driver. Used computer fans & heat sinks ( want to try cast some pin heat sinks, so I can lose the fans) mounted it on some conduit I had kicking around. Yes called cobs (chip on board). the new Quantum boards have mini cobs
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Ah okay see I didn't know you could have individual drivers, I've mostly seen them driven by one. I've seen some people put them on pretty cool looking light racks that fill up a 4x4 space, so they're pretty much just little strips of alluminum with the COBs on them and the driver in the center, but I'm guessing those are the more complicated/costly builds?

For practice I dismantled an old Mars300 blurple led, mounted a Chinese 50w cob on the mars heatsink, used the good Mars driver and fan. I rigged it all up to I prove to myself I could do it with only what I read online and no real world experience with electricity and voltage and all that stuff.

It is supposedly 1100 Kelvin which supposedly includes deep and far Red light. I run it for about an hour before lights out until an hour after lights on. I have proof tested it by running 11hrs daily for about 4-5 days. House didn't catch on fire, experience resulted in success.
That sounds pretty interesting. Did you just remove the LEDs from the Mars and replace them with the COB?

I'm not so sure I'm that confident in my wiring capabilities to really want to do one of these, but they seem to be much better than traditional HID lighting at lower power consumption.
 
This is the F-strip part # S1-B8V261560WW people are using to build there own Quantum boards not sure if they allow outside links
 
I haven't seen the seller on ebay anymore. Yes need drivers I bought 30 w for each (can go up to 117 watts) read they will last much longer if you run them soft Could also go 1 big driver that is adjustable to power more than 1 . I went cheap w $7 drivers for each May yet invest in an adjustable driver. Used computer fans & heat sinks ( want to try cast some pin heat sinks, so I can lose the fans) mounted it on some conduit I had kicking around. Yes called cobs (chip on board). the new Quantum boards have mini cobs
Ah okay see I didn't know you could have individual drivers, I've mostly seen them driven by one. I've seen some people put them on pretty cool looking light racks that fill up a 4x4 space, so they're pretty much just little strips of alluminum with the COBs on them and the driver in the center, but I'm guessing those are the more complicated/costly builds?


That sounds pretty interesting. Did you just remove the LEDs from the Mars and replace them with the COB?

I'm not so sure I'm that confident in my wiring capabilities to really want to do one of these, but they seem to be much better than traditional HID lighting at lower power consumption.
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I've noticed that unlike growing weed, electricity has a ton of constants. I was very confused. I still am to a point, for the most part really. I'm no teacher, but once a person figures out how to match drivers to chips he or she will be set... I still have to learn how to match chips to heatsink, my little one gets hot.
 
Here she is... in retrospect I would have mounted the fan on the heatsink. I still could since I have like 4 more 12v fans.

Yes you should the cooler the cob runs the longer it will last I have mine mounted on computer heat sinks & @ 30 w I can hold my hand inches away with very little heat also room is only 75 F
 
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