Krusty Bucket LED Grow

[Coachgee]

Plants are doing... okay. The DWC on the right is kinda burned from the LED panel. Even with a fan on it, the burn just happens. I've done what I can to bring the branches down and allow some of the smaller non-sucker ones to come up to thicken the canopy and help distribute the heat from the plants. The Krusty on the left is happy, hardly any burned areas sitting under the added 50w panel. Just to be safe, I'm going to do a medium flush in an hour or so, but first pictures to show you. This is either the light doing this (it only seems to happen at areas closest to the light) or the medium is causing a burn/lockout.

Nice log. Does the LEDs get that hot? Did you resolve the burn issue yet? Hope you get it under control before its bad...Youll be ok khyberkitsune I know it... I will be following this log faithfuly...

[khyberkitsune]

Nice log. Does the LEDs get that hot? Did you resolve the burn issue yet? Hope you get it under control before its bad...Youll be ok khyberkitsune I know it... I will be following this log faithfuly...

Ah, I needed to update in this section. I knew I forgot something!

Okay, I had to drop from 170w of light to 100w of light. now the box is lit by 2 50w panels, and my PC case plants have joined the two big ones down there.

As far as I can tell, I have resolved the burning issue. Only time will tell, I trimmed off most of the dead material and left a few for 'markers' so I may track the progression of any further burn. The only other thought I had was this was possibly a potassium burn, but as I checked my formulas and mixtures, I realized this isn't likely to be the case.

But everything is still going!

[moody420]

Plants are doing... okay. The DWC on the right is kinda burned from the LED panel. Even with a fan on it, the burn just happens. I've done what I can to bring the branches down and allow some of the smaller non-sucker ones to come up to thicken the canopy and help distribute the heat from the plants. The Krusty on the left is happy, hardly any burned areas sitting under the added 50w panel. Just to be safe, I'm going to do a medium flush in an hour or so, but first pictures to show you. This is either the light doing this (it only seems to happen at areas closest to the light) or the medium is causing a burn/lockout.

How close was your light? I'm just curious because since I've starting using LED's, I've had no problem with heat or burning on the leaves....and 2 of my plants are touching the light right now! I'm kind of thinking it has to be something else unless your LED's are getting that hot!

curious to see how this turns out.....good luck man! :jointsmile:

[khyberkitsune]

How close was your light? I'm just curious because since I've starting using LED's, I've had no problem with heat or burning on the leaves....and 2 of my plants are touching the light right now! I'm kind of thinking it has to be something else unless your LED's are getting that hot!

curious to see how this turns out.....good luck man! :jointsmile:

For the 50w panel in the PC case, the burn didn't occur until about 1-1/2 or 2 inches. For the 120w, about 9 inches. On the other hand, at those same ranges, I can feel the light pounding against my skin (makes it tingle!) so to some degree I'm not entirely surprised. The top-bin diodes are certainly killers.

[Charbud]

LEDS seem to be doing a good job ! i really want to get some going but i really dont want to buy cheap chinese ones that dont work ! are yours 3w bulbs ? 660nm?

Gunna keep tunes in

[khyberkitsune]

LEDS seem to be doing a good job ! i really want to get some going but i really dont want to buy cheap chinese ones that dont work ! are yours 3w bulbs ? 660nm?

Gunna keep tunes in

Most panels are made in China, pure and simple they've got a stranglehold on the rare-earth market and thus it's almost impossible to find diodes not made in China. Even KingBright, a semi-local LED company, has all diodes made in China and shipped over here.

The diodes themselves are fine, it's the drivers and the panel construction you have to worry about. Most Chinese Drivers just SUCK (bad capacitors usually,) so I had them use Japanese drivers in my panels and I gave them a panel internals design of my own. I've got 460, 630, and 660 in my current generation. The next generation will likely be quad-band, assuming the cost of 420nm diodes drops (they're currently about 2-3x more expensive than any other diode.)

I use 1w diodes, for now. 3w diodes, watt for watt are currently more inefficient than 1w diodes as far as output goes; sure they're brighter but you can get more photon density from three 1w diodes versus a single multi-chip 3w diode.

[khyberkitsune]

I know the light was one issue causing burn on the plants. What I now see is different, and very odd, I've never seen this in all my grows, of any plant. It's not pythium, there's too much oxygen in my system to allow for that and the roots are clean and not slimy to touch. This isn't a lockout judging by the looks of things, so I'm betting on this being a burn. I've typically done a light underfeeding for my plants, so I think the slightly heavier formula I've concocted might be causing the damage and might have exacerbated the light burning.

Per gallon of approximately 250ppm tapwater adjusted to ~5.8:
10mL GH FloraMicro
20mL GH FloraBloom
2.5mL Botanicare Cal-Mag
2.5mL Grotek Pro-Silicate

Otherwise, the plants from the PC case are blooming out nicely (and they're on a lighter solution given their small size, and they exhibit none of the symptoms on the other plants minus the light burn,) and the Krusty bucket is showing more. The DWC not so much, so I'm holding off on pictures of that for the moment.

This is day 3 of week 5 of flowering for the plants from the PC case, day 3 week 4 for the DWC/Krusty. Given the time of flowering, I'm really betting my nutrient solution is causing a problem.

[GP73LPC]

hope you get those nutrient issues worked out... :thumbsup:

i was hoping it wasn't the lights alone...

[demoreal]

That is most def strong. I started my grow using GH. I never went that strong. One good way to tell is to check the ppm before you feed and then check it an hour later and if it goes up you are feeding to much. You are actually using the same nutrients I used the first 4 or 5 weeks of flowering then I changed to botanicare bloom soil/hydro. (no reason other than I had a bottle laying around and wanted to finish my grow with something slightly more on the organic side). Check before you feed and then a bit after and post up what happens. It is for sure to strong. My water starts at 40ppm and I still always put almost half of what you do. (I also use Karma)

[khyberkitsune]

That is most def strong. I started my grow using GH. I never went that strong. One good way to tell is to check the ppm before you feed and then check it an hour later and if it goes up you are feeding to much. You are actually using the same nutrients I used the first 4 or 5 weeks of flowering then I changed to botanicare bloom soil/hydro. (no reason other than I had a bottle laying around and wanted to finish my grow with something slightly more on the organic side). Check before you feed and then a bit after and post up what happens. It is for sure to strong. My water starts at 40ppm and I still always put almost half of what you do. (I also use Karma)

This is what I had figured. I'm betting it might be too strong for the plants, as it was bumped up a bit.

I guess as soon as it comes down to the next res change I'll back off some. I don't have a meter (I get tap samples tested monthly for the ppm on that) and never really relied upon one.