6/9 & A Pinch BayBay!
- Thread starter Coconutz
- Start date
If it's making new leaves it's ready for daily IMO.
Plant and Soak. Lift Pot. Write down Date somewhere.
3 days later it should be much lighter, soak again, or let it dry out more, even to completely dry, but be wary the mediums Ph fluctuates from drying out completely. Best to lift the pot and see how much it weighs, you'll tell when to soak again.
By soak I mean have water drain out the bottom of your container ensuring a full proper watering of all the coco.
I say 2 dry spells and depending in strain, say GG#4 you can go straight into daily feedings.
the advice ive read is, weigh them almost dry. water to runoff wait til done dripping weigh again now that its fully wet. the difference is the water weight. when half the water weight is gone water again. once you do this a few time youll get the hang of it without scale.
cannacultural
Active member
600w HPS which is about 16 inches away or there abouts - inside a cooltube, with temps not exceeding about 24c under the bulb plus fan blowing over top of canopy. So I'm not sure why it'd just be the growth there.
Lights come on in about 3hrs, so we'll see how they're going. I'll likely feed them with 6/9 mixd to around 1.5EC + a hit of epsom to boost. With any luck it'll settle down. I didn't want to bump up the N right away, as it shouldn't just be limited to the new growth of only a small portion of the plant.
Depends on the size of the plant/root mass before transplant and size of final pot. I normally over veg the shit out of some clones in solo cups, transplant to 2 gal, and by the end of week 1 I water them once a day. Normally do something like wait 3 days after transplant to soak, then 2 days, then 2 days, then every day. By the end of week 2 if I haven't started multiple feeds via drip, their growth will start to stunt as they reach maximum size for that pot and only 1 watering per day.
EDIT: Environment and light intensity make a difference here. I veg under a 600 or 1k HPS.
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cannacultural
Active member
lights on. status report: looks like it's improved. Still yellow, but looks to be greening up. Gave it another spray on affected area again. About to feed, will do as stated before
I like that things are improving. Solutions are almost never that simple! I don't think we can rule out a Nitrogen shortage just yet, but if it is the source of your issue then it probably couldn't be that severe or need all that much more of the element.
Tomorrow morning, or the one after, you might want to hit them with a clean water + surfactant (wetting agent) Foliar spray and drop the Epsom for a round. I find that after just a few sprays that there will be a little salty residue left over. This is a concern because those salts could gunk up the stomata the leafs need for brining in CO2 and exhausting the O2.
If residue buildup has reached that point then you'll see a transpiration stress response in the plants. Drooping leafs and curled up edges to help keep them out of the direct light and evaporating as efficiently as they can.
Before seeing this kind of response I will "wash" the leafs every 2-3 foliar feedings (depending on their strength) with a water only foliar. I have been tinkering with Fulvic acid in these sprays, but only 1 drop in a liter. Ivory biodegradable dish soap was my surfactant of choice until I recently switched over to Coco-Wet.
Tomorrow morning, or the one after, you might want to hit them with a clean water + surfactant (wetting agent) Foliar spray and drop the Epsom for a round. I find that after just a few sprays that there will be a little salty residue left over. This is a concern because those salts could gunk up the stomata the leafs need for brining in CO2 and exhausting the O2.
If residue buildup has reached that point then you'll see a transpiration stress response in the plants. Drooping leafs and curled up edges to help keep them out of the direct light and evaporating as efficiently as they can.
Before seeing this kind of response I will "wash" the leafs every 2-3 foliar feedings (depending on their strength) with a water only foliar. I have been tinkering with Fulvic acid in these sprays, but only 1 drop in a liter. Ivory biodegradable dish soap was my surfactant of choice until I recently switched over to Coco-Wet.
sm-90
cannacultural
Active member
Great advice Snow Crash, cheers! Lights out just now, and still seeing incremental improvement - leaves do like a shade greener again, with less yellow covering affected leaves.
I'll give them another spray this evening as you suggest - I do have fulvic acid, which I haven't used for a bit. Will go back to mixing that up like I had and give 'em a spray to clean.
Not a bad turn around in 1-2 days so far, ICMag tech support is ace
When you guys drip irrigate, is it necessary for the plant to have runoff each time or just a good full saturation? I have plants that can be fed more than once a day but it seems as though when i set it a for a certain duration the strong drinkers don't have any visual runoff where as some of the wetter ones do. When I bump up the feed times to compensate for the heavy drinkers I tend to get a lot more runoff than Id like with the other plants. Any input to how I should go about this? Thanks again for the input guys.
You don't need runoff everytime if you are runnning low EC/PPM. Low being 1.2 EC (600PPM @.5). I use an adjustable flow drip manifold, or use individual flow controls for each site.
I normally dial the timer in so that it drinks just enough to get runoff at the beginning of the day, then none the rest of the day. Then as they get bigger I will just do manual flushes every couple days. After a couple manual flushes I increase drip timing. I may adjust drip timing 3-5 times during flower, and individual plant site dripping as much as is needed.
In my setup it is very easy to tell which plants are needing more or less and I adjust accordingly. I either can visually see the runoff, or I pick up the pots and compare how heavy they are at the end of the day.
Ex: 4 mins drip @ lights on, then 1.5 mins every 3-4 hours until lights off.
I've never needed to irrigate during lights off, but I'm sure in some situations it would help.
If that was true then how can so many guys grow in coco/blumats with no runoff ever and ec above 1.2?
My ec has been between 1.35-1.6 ec for 2 months now in bloom with no runoff. That said your advice is solid and he should follow it
If that was true then how can so many guys grow in coco/blumats with no runoff ever and ec above 1.2?
You are right that runoff can be unnecessary. It's a good insurance policy to have though.
I think when I give too much runoff with a lower Ec as you state I have to increase the feed strength to compensate for the 20%+ runoff I achieve each time. So in essence the lower feed would work in my situation if I was going for minimal to no runoff. This would sure save me the time it takes to constantly empty my catch tubs since I'm using up excessive nutes at a higher strength cause of too much runoff. Thanks guys I think I can save some time and money using less and feeding with less. Is it recommended that these well rooted plants stay moist in that respect?
Never let the coco dry out. It doesn't need to be dripping wet out of the bottom, but never let it begin to completely dry. You will see pH swings and hindered growth if you do. You may have problems with gnats but those are easily solved with some BTI. Not worth it to ever let them dry imho. When you keep them wet it's essentially a constant hydroponic solution being fed to the plants, if you begin to let it dry, other dynamics come into play.
If your pots are so small and your plants that big, best situation is to feed as often as is necessary so they never dry out. Small amounts often to keep things nice and moist. If the pots are a little bigger than time between feeds can increase. It's all about how much roots there are, and how big the plants are.
I think 1.2 EC is a fine spot to feed, no matter if feeding until runoff or not. If I feed any higher, most strains begin to claw or get tip burn over time. Not initially but after a week or two at 1.6-2.0EC things start to not look as good. Doesn't seem to matter how much runoff I was giving. If I choose to feed without runoff, I will go 2-3 feeds with 1.2 EC then follow with 1 feed of just plain RO. Seems to work fine when I have extra plants sitting on the floor.
With drip try and balance the heaviest drinkers with the lightest. Definitely do not let those center plants dry out it is bad. If they don't get runoff fine,but keep them moist. Also in a multi feed setting they usually are achieving runoff during the feeds in the middle of the night, just not that first one. I don't think I would ever try drip on a multi strain table again. Different strains just drink and eat so differently it sucks.
