You're suggesting I feed less often? Right now I'm actually feeding more in an effort to keep salts from building up. (That's why I watch the EC of the runoff.) It seems to be working, though at the cost of going through an amazing amount of fertilizer. This morning I took 7 buckets of runoff (EC anywhere from 1300 to 2000) that built up over last week and dumped them on various plants outside - trees, bushes, flowers, whatever.
So im not gonna be able to give you advice on how to feed because ive never ran coco. I have just seen enough posts on it to know understand the overall concept. So when you first posted your growth rates thread, i said it had to be caused by high run off. Then you agreed, and i was shocked that I was right lol. But in my head, you were doing things differently, which is why you had better veg results. Now that your in flower, and you still have the high feed rates, or whatever it is, i really dont undestand coco, whatever your doing differently than most, well it doesnt work for flower unlike veg.
I would assume that certain nutrients during flower need a longer retention time with the roots. Yet for veg, those nutrients can be uptaken even under high flow rates.
As for me suggesting you feed it less, all I can relay is that you want almost 0 run off, like the guy who taught me, taught others, and I remember him telling them to reduce their run off, like he said if you reduce it, you dont have to monitor it as much, mainly focus on input feed. Perhaps im wrong, but id say however everyone else on here is doing it, id do it like them. I would suggest your method for vegging them in coco is better than most, yet as for the flower they got ya on that.
Compared to veg, it seems like the flower stage is just like my soil grow, except I'm thinking the colas are going to be much bigger. It's a bit hard to tell here, because the strain must be taken into account. I'm growing Sour Diesel this time, and it's said to have an 11-week flowering stage, so seems slow.
I wish I knew more about growing. I've read a LOT about cannabis since it was legalized in Colorado, but never about growing it until last year.
Ironically I started growing in February of last year too, little over a year. I started with dwc, then rdwc. Ive never grown anything inside or outside in dirt or coco. .only water. I would suggest hanging out here and keep doing what your doing. Hit up
@Dirtbag for some flower coco help, he makes beautiful plants and Im sure he uses coco. Lucky for you, lots of people here do it, its just if you apply it or not, or how you apply their logic. You seem way smarter than me so im sure you will pull the info out of someone eventually.
I'm not trying to push growth rates, just trying for healthy plants. This is by far the worst thing I've seen with the plants this grow, but it is limited as well - only top fan leaves directly under light at a distance of 12-14 inches. This light should have at least 24 inches clearance, if not 36.
Well when you go coco, your pushing growth rates in my eyes. Anytime you have to feed it nutrients, your gonna get hella boom. Guess its just my train of thought.
Again, only a few parts of the plants directly under the lights show issues. The growth below those scorched leaves on the same cola look fine. The parts of the plants that had the right amount of light around the edges look tremendous. Other than the 'sunburn', I've had a small bit of tip burn, which I'm addressing by lowering EC (and increasing runoff).
I'm just starting to learn about what red stems mean. Care to explain?
So if your fan leaf stems are red, and your stalk has red veins, its a sign of overfeeding, Some plants have different color genetics though, so ya gotta be carefull. All of my strains ive ever grown have green stems at the beginning. Now once I lower the light and start pushing the growth rates, the top fan leafs will have the top side of the stems red, but underneath the stems they will be green, and my main stalk will be green. To me this is normal and what I want. Now when I give them too much light the fan leafs become brittle looking, and start to wilt on the edges, while the jagged edges slowly turn yellow. When the light burns the leafs the damage works its way in, starting at the tips getting the least amount of transpiration and are the thinnest. Ill try to find a picture if I can, I actually need to lower my lights about a foot after this grow. I have yet to get any light burn and im depressed. I want a bit of it at the top, that way I know im pushing growth rates. Ill find a pic after this comment.
Coco - now that I'm most of the way through a grow, I'd say this. The only complicated part seems to be figuring out how much cal/mag is needed, though that's probably my ignorance showing. I don't know how much is really needed, especially late in the grow, but it eats a lot of my EC budget that might otherwise have been used for nitrogen.
Compared to soil, it's far easier to water and not overwater, which I appreciate. It will be interesting to open the pots at the end and see the root growth.
Because it is not soil, I had to unlearn some things, and I've had to set up and automated watering system. That also forced me to set up an automated drainage system. All that forced me to learn about pH and nutes as well, which learning process is continuing.
Since I posted those pics, the problem has mostly worsened. Lots of the affect leaves are pretty yellow now. I'd put that down mostly to flowering, but all the yellowed leaves are the top layer under the brightest area. Oh well, because of the light clearance issue I've had to compromise, and this just seems the inevitable result.
So as for what to do now. Id start from scratch with a flower feed rate thread for coco. Or study a few. Good suggest is hit that search bar, member name "Aquaman" Search Coco Feed Rates, or something similar. He flooded the forums with everything you need to know, all he did was repeat himself over and over on everyone who needed help.
As for looking at ur pics above of the leafs, this is the first i seen it lol. Yea thats not light burn, thats nutrient uptake issues. Its not getting something, id compare it to a deffeciency photo chart.
