HLG 260w led + Canna vega problems.
- Thread starter Gman94
- Start date
How can it be a lockout when theres no supplements in the mix? I agree the two first pics could be lockout because of high nutritients and calmag supplementation but the two last pics are on low nutritients and no supplements whatsoever.
Yes i changed the res and thats why im down to 600ppm / 0.9 ec.
My water is really clean, ec is about 0.0-0.1
Yeah thats whats fucking me up in this grow tbh, i get confused between lockouts and deficiencies..
Aolelon
Well-Known Member
But potassium and phosphorus excess can cause calcium deficiencies and lockout also so.
Sounds like your tap water is pretty good.
Maybe take a stab at it?
If you think higher, go a little higher.
If you think go a little lower, go lower.
Monitor the changes. If it gets better. You're probably heading in the right direction.
Trust your gut feeling.
Remember too. It isn't a 1000watt light you're using. Its not feeding as fast, as if it were. Or drinking us much water.
Maybe take a stab at it?
If you think higher, go a little higher.
If you think go a little lower, go lower.
Monitor the changes. If it gets better. You're probably heading in the right direction.
Trust your gut feeling.
Remember too. It isn't a 1000watt light you're using. Its not feeding as fast, as if it were. Or drinking us much water.
This 260w light actually has really impressive par readings, its compareable to a 600w hps in fact.
Im gonna go to my local hydroponics store and have a chat with the guys there, they have been part of research on how LED’s affect growth and he was the one who told me i had to use calmag supplement, i think he’s right but im having troubble with the dosage maybe...
He explained that the nutritients they sell, wich is canna, is made for HID grow lights, and because of the difference in spectrum from LED’s you need to add calmag supplement to the res to make up for that difference.
So IMHO this is a learning curve, and my issue really is the LED light affecting how my plants are consuming different amounts of nutritients in a way i havent seen with HID grows, causing deficiencys and lockouts i normally would not have to deal with under a HID light where calmag supplementation would be unnecessary. In my HID grows i really only needed the canna nutritient and some ph down to control the PH at times, exept for that it was all good and the plants rarely got any weird symptoms at all..
nonamedman420
Well-Known Member
how close is the light? maybe it's too close. weird problems with too much intensity with led's vs hid's due to the lack of infrared and uv. try raising the lights up. too much ppfd and they will start looking like they have a mag def, i'm likely wrong, but at least think about light distance as i haven't seen it mentioned here, unless i missed it.
Aolelon
Well-Known Member
I have no problem keeping my plants 12" from my HLG-260
nonamedman420
Well-Known Member
i hear that a lot, but it still can happen, especially if the plant doesn't have the root mass to support the light intensity
edit: it's amazing what an inch can make when it comes to intensity.
edit: it's amazing what an inch can make when it comes to intensity.
You might be on to something, but i cant tell.
I dimmed my light all the way down to 150w and over a week or so i dimmed it back up 25w every other day untill im now back at 260w i dont know if its a coincidence or not that the problem is back again now tho. But the light is hanging at 20 inches above the plants so should be good?
thats what she said
nonamedman420
Well-Known Member
i had the exact same problem, dimming solved it. you could be at the upper limit of ppfd and the plant can't metabolize fast enough. the closer to the light the plant gets, the higher the par #'s are, and obviously the ppfd. maybe co2 would help, but raising the light and/or dimming would help in this situation. also, led's need higher ambient room temp to maintain optimal leaf surface temp for photosynthesis, than say a hps or mh light requires.
check this link out: http://fluence.science/wp-content/uploads/2016/09/High-PPFD-Cultivation-Guide-9.27.16.pdf
it has a ton of useful info for growing with led's. specifically it shows optimal temps and humidity levels to maintain optimal vapor pressure deficit for optimal nutrient uptake and just about everything one would need to know for environment requirements for good growth with led-only lighting for different ppfd levels. even though you may not have the sypderx light, the info is invaluable for all led growers.
nonamedman420
Well-Known Member
hell yeah, need a bud-um-bing
long and thin may be in, but short and fat is where it's at!
nonamedman420
Well-Known Member
gman.... wouldn't be gamy by chance?? if you don't understand, then don't worry.
a jon
Well-Known Member
Ive been growing for over 20 years and just tried the hlg 260 well 2 of them in a 4x6 area to veg and tried a cheapish led that had a veg, bloom mixed spectrum, seems like I can keep that light 2 feet away and the same exact cuts are loving it, under the hlg 260's I had to put them up to 4 feet above to make what looked like deficiency's go away. they also burn a lot hotter then I would expect as well. My plants were showing signs similar to yours even at 2 feet above. def not a nute problem as they were just transplanted into a soil recipe Ive been using for 15 years and needs no extra food for 3 weeks and the ph run off is 6.3. I can tell you those lights put a lot of light down and I cant believe how high they needed to be before what looks like a cal deficiency on some and a potassium on others. So like you said when you dimmed the light things got better, that was probably the reason. I'll be switching back to my de 600w MH next veg. seemed to run just as cool as the 2 260 hlgs
Hey man, i eventually solved this problem by switching to general hydroponics 3 component nutrition, one of the 3 components has all the calsium and magnesium i think, so what i did was using like 20% more of that one component than the others, after that the plants grew without any problems. I also bought a air humidifier wich also helped alot.
I will only be using general hydroponics nutritients with my led grow lights from now on, simply because of the way you can change the nute mix perfectly when you got 3 components instead of two like with canna.