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[Jamie cole]

I'm growing indoors in rockwool cubes 6inch stacked on another 6 inch cube, top feeding on a drip i have been hand watering at the start and I'm day 22 with one chocolate mint go by humbolt and been water like ever 2 day or so when my cubes almost dry but the bottom one always stays wet and seems to get all the water but i thought i might switch it top feeding as i saw on youtube you supposed to feed 2x in veg at like 102ml +102ml because i have 2 cubes but my plant has been looking very droopy can anyone help me with any advice first time in rock wool and my plant seems a bit behind

 

[Roger A. Shrubber]

I'm growing indoors in rockwool cubes 6inch stacked on another 6 inch cube, top feeding on a drip i have been hand watering at the start and I'm day 22 with one chocolate mint go by humbolt and been water like ever 2 day or so when my cubes almost dry but the bottom one always stays wet and seems to get all the water but i thought i might switch it top feeding as i saw on youtube you supposed to feed 2x in veg at like 102ml +102ml because i have 2 cubes but my plant has been looking very droopy can anyone help me with any advice first time in rock wool and my plant seems a bit behind

i'm not a rockwool guy, but i've seen lots of grows. never seen anyone stack same sized cubes on top of each other, it always looks like a step pyramid, starter cube on top, then a larger cube under that, and a larger one under that...i've always assumed that was for 2 reasons, one being stability. the other reason being that water runs down hill, so you want the larger base so the water has someplace to go, and a larger surface to evaporate from. it also gives your roots a lot more room to spread out, which will dry the whole mass out faster

 

[Jamie cole]

i'm not a rockwool guy, but i've seen lots of grows. never seen anyone stack same sized cubes on top of each other, it always looks like a step pyramid, starter cube on top, then a larger cube under that, and a larger one under that...i've always assumed that was for 2 reasons, one being stability. the other reason being that water runs down hill, so you want the larger base so the water has someplace to go, and a larger surface to evaporate from. it also gives your roots a lot more room to spread out, which will dry the whole mass out faster

thanks for the reply i can't determine id its underwater or overwatered

 

[Roger A. Shrubber]

thanks for the reply i can't determine id its underwater or overwatered

they don't look that bad.
it's definitely not under watering. underwatering the leaves will get limp, stems will sag, it's pretty easy to tell underwatering.
your leaves are fat or "turgid", the leaves themselves have a little curl to them, and the stems aren't sagging. that's over watering. not bad, but the beginning. how long has it been since you added the second block of rockwool? have they had time to grow down into it well? they may just still be trying to get themselves established into that second block. once they get some roots into it, the "problem" may solve itself

 

[Jamie cole]

thanks for the reply and I've left to dry out atm but they seem to be getting worse i think and its been like a week and half since second block but i have had a peek behind plastic and i can see roots established quit a bit just seems like the leaves arnt perking up

 

[Roger A. Shrubber]

you might be better off reposting this in the hydroponics section, all the hydro guys who will have extensive rockwool experience will be hanging out there

 

[Jamie cole]

okay thanks for the advice anyways i appreciate it

 

[led1k]

Growing in soil and using Megacrop. Soil is E.B. Stone Recipie 420 in 3gal cloth pots. Girl Scout Cookie from a dispensary. I've battled pm and used Actinovate which has appeared to win the battle against the tiny white powdery fuzz. Now I have this going on. Not the same leaf but you can see the progression of whatever this is.

 

[ganga gurl420]

I would personally guess a phos deficiency

 

[Roger A. Shrubber]

everyone is all about the megacrop.....but i've seen a shitload of posts about people having trouble with their plants while using it........i'm not particularly impressed with the megacrop.......either it's not all that, or it has a steep learning curve and not good enough instructions

 

[led1k]

everyone is all about the megacrop.....but i've seen a shitload of posts about people having trouble with their plants while using it........i'm not particularly impressed with the megacrop.......either it's not all that, or it has a steep learning curve and not good enough instructions

In my case I'm pretty sure it's me trying to use MC in what has been described as fairly "hot" soil. Also, this plant in particular suffered through me PH'ing water to Hydro (~5. vs Soil at 6.5. Watered with overnight tap water PH'd to 6.5 and got a fair amount of runnoff which tested at 6.6. Maybe the soil and MC together can cause a P lockout?

 

[Dolldolphinfin]

Hey now, took this through my method 7 glasses. Did it come out ok? Not sure what this is just one plant doing it.
Over watering? Just bumped up watering.
Broad mites? Never had them.
Hitting hot nuts in bottom?
This is new clone and guy I got it from has never seen this on any of his plants.
Indoor grow, amended soil in bottom roots organic for top layer. First saw it start in veg

 

[Javadog]

This reminds me of root-death from over-watering or N-burn to the point of inflammation.

So, yes, over-watering would be my guess. Good luck!

 

[Tiflis]

Hello everyone
I've got a feminized Double Zero OGK by Mosca well into flowering. She's in pretty small container, 50/50 mix ocean Forest and happy frog. Usually dries out every 2-3 days. I know I have overfed, because tips are showing the burn, not too bad thou. I have only given her water last 2 times and now am seeing some yellowing on some of the older growth.
I have the fox farm trio bottled nutes: big, big bloom and tiger and Botanicare Cal/mag. I gave her grow big 2 times first few weeks of flowering and big bloom twice. Second time is when I over did it.
Ph seems to be within range. I have GH up/down kit.

Thanks for all/any help
I'm going to need to water tomorrow or next day at the latest. Feed or no feed?
Forgot to mention that I'm using roleadro cob led. 135 actual watts

 

[Roger A. Shrubber]

Hello everyone
I've got a feminized Double Zero OGK by Mosca well into flowering. She's in pretty small container, 50/50 mix ocean Forest and happy frog. Usually dries out every 2-3 days. I know I have overfed, because tips are showing the burn, not too bad thou. I have only given her water last 2 times and now am seeing some yellowing on some of the older growth.
I have the fox farm trio bottled nutes: big, big bloom and tiger and Botanicare Cal/mag. I gave her grow big 2 times first few weeks of flowering and big bloom twice. Second time is when I over did it.
Ph seems to be within range. I have GH up/down kit.
View attachment 4281904 View attachment 4281906 View attachment 4281907
Thanks for all/any help
I'm going to need to water tomorrow or next day at the latest. Feed or no feed?
Forgot to mention that I'm using roleadro cob led. 135 actual watts

back off the grow, cut down the ppm of your nutes by about 25%, and take some of the calmag and make up a 200 ppm solution and foliar feed with it. too much N, not enough Mag. should check your ph going in, make sure it's in range, although in this case i'm betting the mag problem will clear up if you stop over feeding, probably being blocked by too much P.

 

[Tiflis]

back off the grow, cut down the ppm of your nutes by about 25%, and take some of the calmag and make up a 200 ppm solution and foliar feed with it. too much N, not enough Mag. should check your ph going in, make sure it's in range, although in this case i'm betting the mag problem will clear up if you stop over feeding, probably being blocked by too much P.

Thank you Roger for quick reply. I don't have a ppm meter, but I'll give her light Cal/mag feed next, see how she responds. I haven't given her much of that at all. I think she just got it twice with grow big, which I fed during first 2 weeks of flowering.
I checked the runoff last time I watered and pH was within range.

 

[Roger A. Shrubber]

run off isn't what you check. make your nutrient solution and check it before you feed your plants. as long as you're putting it in at the right ph, don't worry about run off.

 

[Tiflis]

run off isn't what you check. make your nutrient solution and check it before you feed your plants. as long as you're putting it in at the right ph, don't worry about run off.

By the time I got the pH kit, I had already stopped feeding so there was no nutrient solution to test. Will do so when I feed and adjust if needed

 

[led1k]

run off isn't what you check. make your nutrient solution and check it before you feed your plants. as long as you're putting it in at the right ph, don't worry about run off.

Doesn't the runoff give hints as to how the plant is reacting to what you give it? PH drifting up or down and EC higher/lower?

 

[Roger A. Shrubber]

this is NOT hydroponics...runoff is pretty much useless information...your plant would be seriously fucked up looking if the ph of your medium is off significantly....if it grew at all.
the ph of medium changes through the day, as the plant both absorbs nutrients and makes exudates that coat the roots...
do you know how to account for that? do you expect the ph of the root zone to be 5.8? or 6.5? or w/e you feed at? cause it's not, and never will be. the nutes you put in temporarily change the ph, the plants absorbing those nutes change it further, the time of day changes it, as the plants don't absorb as many nutes at night, and produce more exudate......
so, unless you have a complete and total understanding of all of those processes, the information you get from soil ph is meaningless to you...