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Can you grow with cold cathode computer lighting?

ScrubNinja

Grow like nobody is watching
Veteran
Aye. I've even taken clones way into flower - a few weeks from finish. But it's like revegging - not guaranteed....and takes too damn long cos you have to root it, as well as reveg it!

Take a look into aerated teas if you get a chance Appz. It's not so much feeding - it's more putting a small amount of beneficial microbes in water, with some food for them (molasses) and multiplying them many many times. I know what you're gonna say and no, it doesn't stink, and yes you can micro-ize the process.

I picked up a crazy insane air pump and now making a molasses, kelp, fish emulsion, guano tea :D My tomatoes are gonna go nuts for this - it's just as instant uptake as hydro in my opinion. Also bro if ya want another tip - make sure you bubble your water, or leave it out in the sun if you have chlorine in your supply (I do both). Remember that once a leaf does the claw, they generally stay that way. So if you've had the claw, then flushed, then seeing signs of needing a feed plus clawing, I would just give it a feed.

Scrub's gardening tips :smoke:



Dechlorination unit running off same pump:



This thing uses 25w!

 
oldbootz:
It wasn't you that derailed the thread, it was me and I am sorry to all.

ScrubNinja and apples:
Hope the plants recover.
 

StealthDragon

Recovering UO addict.
Veteran
picture.php


Hi.

:lurk:
 

ScrubNinja

Grow like nobody is watching
Veteran
Morning all, nice work :D Mine seems to be doing great. Anyone who saw my dilemmas in the pll cupboard will know I'm hopeless with seeds. So I think it's doin' pretty damn not bad.



Still half lights, still ain't done the wiring and timer, still ain't done apple's test, still high as a kite :cool:
 

ScrubNinja

Grow like nobody is watching
Veteran
These are all with one inverter, and the 10A setting. Can't really test it properly as the bits are in use.

  • 1 x vantec 30cm blue - .35
  • 2 x vantec 30cm blue - .53
  • 1 x 10cm bitspower orange - .22
  • 2 x 10cm bitspower orange - .33
  • 1 x 30cm bitspower uv - .34
  • 1 x 30cm bitspower uv + 1 x vantec 30cm blue - .5
 
So adding the second tube to the inverter increases power drawn by 50%, now you need a light meter to test whether light output is increased by 50%.

If so then using 2 tubes on each inverter would be a good idea as the tubes will last longer from being underpowered but whether that is actually good for your particular grow design depends on how the extra tubes will affect your set up.
 

ScrubNinja

Grow like nobody is watching
Veteran
I forgot about that light meter. That makes a lot of sense so I'll get on that. My big problem at the moment is that I can't make any sense of the timer's instructions for wiring. Can you tell anything by the back of it?

picture.php


I suspect

1 = positive from psu
2 = negative from psu

but the rest is uncertain. I can take pics of the instructions if you think it'll help.
 

apples

Active member
well so far my 2 plants under CFLs are bulking up much more than the one under the CCFLs.

Its interesting and a cool experiment but really, I just want to remind people that this is probably something you don't want to F with. Its actually quite a pain in the ass, at least so far and in my situation. Stealth and Scrub might have great results in the end. However, unless these produce some godlike plants oozing with resins, I find it to be pretty inconvenient and complicated for any practical applications.

I've said this kinda stuff before but this is a large thread filled with lots of info, so I just wanted to put this up again in case anyone flips through and gets all excited about it. Get your ass some cfls and call it a day.

Still I'm excited to see these plants through till the end and would like to thank everyone for their participation in this thread.
 

ScrubNinja

Grow like nobody is watching
Veteran
lol the thing with that is, anyone else would have just plonked em all together and done it, but I (and they) felt we should keep it all safe and work these numbers out the first time so the following people don't have to hit their head on the same hump. They are pretty simple and no more difficult to understand than any bulb with an external ballast. At the end of the day, even the cheapest shittiest pc power supply is way enough to run plenty of lights.

Mine is growing ten times as fast as the last ones I had under pll's and also under cfl's, but both our results are only anecdotal. I totally understand your points. It was rough going this time, but it's easy street now. I can even just use a regular timer, and it's no biggie.

Apples, do you not see that these are small wattage? Look at every single ccfl cab so far, including AlienBaits, and do you not see that your lights are spaced waaaay apart? All due respect and all, and like I said, I can't lie - it was a hell of a time getting to this stage, but you did jump right in there without much research or planning that I could see.

So points taken, but I see no reason thus far why I shouldn't expect godlike plants oozing with resins. Not here for a tea party. This is what I want in there:



And that is what I will get. Negative thinking will only detract from your results, and the enjoyment you get out of gardening.
 

apples

Active member
I don't mean to come off negative, I just issuing a warning to any new comers that this is new untested 4th dimension time travel shit!
 

ScrubNinja

Grow like nobody is watching
Veteran
No worries Apples, I had just come from checking it thinking "wow it's doing so well" so it wasn't a good time, lol. It is doing great!

Your point is exactly right really so I shouldn't argue. I think it's very interesting that of us three trying it, we cover the whole spectrum. You were like "lets just grow some plants you freakin' nerdz!" and really, that's the most common desire! :yes:

Mk, :smoweed:
 

ScrubNinja

Grow like nobody is watching
Veteran


Seems compact. I unplugged 2 reds and dangled in 2 blues. See what happens.

Edit: :woohoo: 4 new Leda Uno seeds planted (jiffy peat pellets) and all lights wired (except for timer) ((yes I'm still stuck))

Do you guys notice that the white bulbs look green when they're all together?
 
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ScrubNinja

Grow like nobody is watching
Veteran
Mhmm y'all actin' like y'all forgot about scrubnizzle and da double-C eff izzle! :noway:

How you guys goin' anyway? Weather has been insane here and the room the ccfls are in is no circulation, so temps have been close to 90º a lot of the time. It's not doing great, but see what you think.

picture.php


I moved it away from the bulbs, lower and right in the centre so it's away from the heat source and maybe the weaker light will let it stretch more. I think I will unplug some reds.

So far I've got 3 of the new Leda Uno's popped up. I let them dry right out so I'm happy if only 3 out of 4 come up, but the other one may well pop too.

picture.php


I made that quickly last night, 2 vantec blues, and two 10cm oranges as side lighting. I have to rebuild it properly as I needed something quick on the spot. That's a great aspect of these lights, just tape 'em in and go.

By the way, the "crappy" seedling is still the best I've had since the whole pll cupboard seed fuckup, so it's all good, but the new seedlings should be a much better example as they've had no cfl or sun light, just ccfl.

:grouphug:
 

StealthDragon

Recovering UO addict.
Veteran
Sorry bud, I didn't forget about the Scrubnizzle. I've been busy with some other projects and my camera died on me. I've planned on getting a new one but can't afford to get one for a few more days...I'll posts pics as soon as I do though.

The ladies are doing good, I'm getting them all trained, and teaching them how to lie down. They're growing pretty well, they're doing well enough that I might flower them under just the 6 lights rather then adding another 6 later.
 

ScrubNinja

Grow like nobody is watching
Veteran
Wow that's good to hear about the growth! I will write mine down to temp issues then. My ccfl seed raising room there is just an open plastic box and a fan nearby blows air past the top so it gets gentle circulation. Seems to be working great and I only run two blues now. Seedlings seem confused in between the two bulbs. They seem to want to choose one light or another. It's hella interesting.

Also, lol, I have issues. Remember way back in the heady days of ccfl when we read about clamping your hands around the wires can dim the lights? Well, I think it may be related to that. Someone help me before I blow my shit up!

I noticed since I started using the fan controllers ccfl inverter (inbuilt) that it's lights would flicker sometimes, say quickly every 15 seconds. Then I noticed if I touch the fan controller's casing, the lights dim right down and flicker a little. Then I realised, and this is such a typical weird thing to happen, if I hover my hand over the fan controller without even touching anything, the lights dim. So what, prey tell, is the f*ck up wit dat?!

The high frequency and voltage that CCFLs run from, by the way (some tens of kilohertz and several hundred volts), means that they're very sensitive to cable capacitance. The more capacitance their cable has, the more power it'll suck away and the dimmer the light will be. If you bunch both fists around the floppy white wires running to a CCFL, you'll practically extinguish it; it'll probably only light at the cathode end where the wires enter the lamp assembly.

Does this sound like a capacitance issue or a grounding issue? I tried putting the fan controller on the PSU so their metal cases touched and it behaved differently, but basically did the same thing. :help:

Also, 4 out of 4 seeds sprouted, yayey! CCFL POWER!
 

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