best way to up potassium, or should I?

Splinter7

Splinter7

Well-Known Member
so, got 9 strains on the same feed day 14 flower. always one or two are giving problems as you might expect with such diversity, but I got most of it under control. It seems the faster flowering ones are not liking the current regime.

I have a classic potassium deficiency in one (blackberry kush from Blimburn). It has been a bit of a whiny plant the whole grow...it often wants what is not on the table.
what is the best way to just up K? i am feed GH bloom with calmag.

i was going to drop the calmag for a week as the blueberry muffin doesn't want any more N. it's dark and has mild clawing on a few tips. so, it's N life is about over. so, this let me add more bloom nutes. will the extra bloom nutes in liue of the calmag get me to where i need to be or should i start up the koolbloom to get the K higher?

is this happening because these are the fastest flowering plants and just need a bit more/less now when the others will want the same later? i can split the feeds into early and late or something...doing more than 2 feed mixes is a problem.
 
A

ALPHA.GanjaGuy

Well-Known Member
Everyone will ask to see the plants. We also need to know what all you have been feeding and how much specifically before anyone could really suggest a next step. Also let us know lighting, substrate, temp/rh
 
Splinter7

Splinter7

Well-Known Member
ALPHA.GanjaGuy said:
Everyone will ask to see the plants. We also need to know what all you have been feeding and how much specifically before anyone could really suggest a next step. Also let us know lighting, substrate, temp/rh
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the pics are irrelevant here. i know what the problem is very well. GH bloom floranova and calmag is the feed. that's it. so n has been higher than the base bloom and K/P have been lower. light feeds because of perlite gallon hempy (total ppm include 250ppm tap, total ppm is 500 to 550). i have an over nute issue and an under nute issue, N and K, respecitvely on one plant each. and, i have 8 other happy plants. alternating mosquito bits and peroxide (15ml per gallon) between feeds. i will stop the moquito bits in a week or so and go back to peroxide each watering. going to water in just a min....i guess i will just use the bloom feed this time at about 500ppm total. that will give me less N and more K. next week i will get to see if the sativa doms wanted calmag this feed. hopefully none.
 
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ALPHA.GanjaGuy

Well-Known Member
lol, I think people would like to ensure they are suggesting the correct action based on what the plant looks like rather than trusting the person asking for help is identifying the def correctly. Typically people who know don't ask for help

Clearly if you are 14 days into 12/12 you are entering bloom and would need bloom nutes soon if not now but without seeing a plant no one will guess at the risk of damaging your plants or offering incorrect info
 
Splinter7

Splinter7

Well-Known Member
ALPHA.GanjaGuy said:
lol, I think people would like to ensure they are suggesting the correct action based on what the plant looks like rather than trusting the person asking for help is identifying the def correctly. Typically people who know don't ask for help

Clearly if you are 14 days into 12/12 you are entering bloom and would need bloom nutes soon if not now but without seeing a plant no one will guess at the risk of damaging your plants or offering incorrect info
Click to expand...

the problem with posting 10 or 20% of your plants that have an issue makes those who are viewing the pic forget that the tent(s) are dialed in to the crop for the other 80%. they are just one off plants having a one off issues. every time i post something like that i get comments that range from 'change the medium' to 'use maxibloom' or my favorite given i am in perlite 'you have bad watering practices'. we don't need those distractions. not a noob, and it is classic k deficiency. and, given my nute regime i might understand why as flowering is taking off. a lot folks run calmag through week 4 or 5, but i am getting N issues on 1/10 sensitive plants. i used to just switch to bloom day 1 of flower, but this time i was trying to give a little n and cal/mag for a bit longer. i like green plants.

again, i wasnt' asking for a plant assessment, but thanks anyway. i was just asking how to up K and if upping K is normal before doing so. too late now.
 
coreywebster

coreywebster

Well-Known Member
www.onestopgrowshop.co.uk

Canna Mono Nutrients

Please note: This item is purchase to order. Fix Specific Deficiencies with Canna Mononutrients! There are lots of high quality, ready made base nutrient formulations out there which have been optimised for certain substrates and different stages of the plants' life. Despite this, deficiencies...
www.onestopgrowshop.co.uk www.onestopgrowshop.co.uk
 
Splinter7

Splinter7

Well-Known Member
Billy the Mountain said:
View attachment 5274316

Potassium Sulfate is roughly $5/lb.
One gram/gal is 110 ppm K and 48 ppm S (a little goes a long way)

A better alternative to the over-used and abused PK boosters.
Click to expand...

it occurred to me some time back that the pk boosters, being that they're not magic or proprietary chemicals, is just a way to adjust your NPK ratios. is that the consensus? so, if you want to drop N later in flower, you just reduce the bloom nutes and add booster...anyway i had been doing this for some time, but hadn't really seen that mentioned as the reason for running the boosters.
 
Billy the Mountain

Billy the Mountain

Well-Known Member
Splinter7 said:
it occurred to me some time back that the pk boosters, being that they're not magic or proprietary chemicals, is just a way to adjust your NPK ratios. is that the consensus? so, if you want to drop N later in flower, you just reduce the bloom nutes and add booster...anyway i had been doing this for some time, but hadn't really seen that mentioned as the reason for running the boosters.
Click to expand...
PK boosters are a product only marketed to cannabis growers.
That should answer any questions.
 
Splinter7

Splinter7

Well-Known Member
Billy the Mountain said:
PK boosters are a product only marketed to cannabis growers.
That should answer any questions.
Click to expand...

well. if you want to drop N, is there another way to do it? maybe booster is the wrong word if you want to be pedantic about it...just more nutes to adjust the ratios. like bloom 2 part. i have run just bloom before, it was ok. it was way better with boosters.. i also like to get super low n later in flower. there isn't really a better way if the platn is still need some p and k. and what you said isn't correct. bloom boosters are marketed for all sorts of plants...seems like you are just making up stuff to harsh the mellows of others.
 
MannyPacs

MannyPacs

Well-Known Member
Are you saying you're getting N tox from 300ppm of bloom? That just doesn't sound right. If everything else is doing well it might just be best to continue with what's working and not focusing too much on the one unhappy
 
Splinter7

Splinter7

Well-Known Member
MannyPacs said:
Are you saying you're getting N tox from 300ppm of bloom? That just doesn't sound right. If everything else is doing well it might just be best to continue with what's working and not focusing too much on the one unhappy
Click to expand...

thank you sir. yes. i know the nutes look low, but if i ever go over a total of 550ppm i get tip burns. it's a 2 gallon hempy and i feed every watering. i used to use higher ppm when i was alternating feeds between watering. the plant with the slight n claw is very dark, darker than all the others. i have another plant i kept from another grow, different strain, that does the same thing. 500ppm total (so under 300ppm) with higher ratios of N and i get claws. it seems ppm isn't really a perfect measurement as the conversion from ec to ppm assumes a ratio of calcium which i am probably not using in that same ratio. maybe it's just useful as a yard stick for setting up nutes from watering to watering.

when i ran 5 gallon hempy's and did alternating watering i could run about 750 to 850ppm total (so about 600ppm of actual nutes) with the same bottles of nutes. running a 1000ppm i would get some pretty good tip burn.

what you suggest is what i have done before...if one plant doesn't like the feed oh well i have lots of others in the room that are loving life.
 
PadawanWarrior

PadawanWarrior

Well-Known Member
coreywebster said:
www.onestopgrowshop.co.uk

Canna Mono Nutrients

Please note: This item is purchase to order. Fix Specific Deficiencies with Canna Mononutrients! There are lots of high quality, ready made base nutrient formulations out there which have been optimised for certain substrates and different stages of the plants' life. Despite this, deficiencies...
www.onestopgrowshop.co.uk www.onestopgrowshop.co.uk
Click to expand...
According to their website it says don't use with the other stuff he's using. I wonder what the ingredients are.

You can not mix this form of Potassium with fertilizers containing Calcium and Potassium.

Splinter7 said:
well. if you want to drop N, is there another way to do it? maybe booster is the wrong word if you want to be pedantic about it...just more nutes to adjust the ratios. like bloom 2 part. i have run just bloom before, it was ok. it was way better with boosters.. i also like to get super low n later in flower. there isn't really a better way if the platn is still need some p and k. and what you said isn't correct. bloom boosters are marketed for all sorts of plants...seems like you are just making up stuff to harsh the mellows of others.
Click to expand...
Maybe dilute some potassium sulfate in water. I don't know. It's like 0-0-50.
 
MannyPacs

MannyPacs

Well-Known Member
I'm not saying that this is your problem, but I've had a lot of what you were describing when I was running low on p. Leaves would get darker, some would claw and the tips would look like they were burnt when I knew they couldn't be because I was running very low EC. There's just no way you should be burning when you're only adding .5ec of nutrients.
 
Splinter7

Splinter7

Well-Known Member
MannyPacs said:
I'm not saying that this is your problem, but I've had a lot of what you were describing when I was running low on p. Leaves would get darker, some would claw and the tips would look like they were burnt when I knew they couldn't be because I was running very low EC. There's just no way you should be burning when you're only adding .5ec of nutrients.
Click to expand...

next feed, i am going to run 650 (total) of the bloom and see if they take it and ratchet up after there. i haven't felt confident doing this for some time.

so, you are saying low P can make the leaves extra green? i hadn't heard that before.
 
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