Plant growing very slowly under cfl's, please help.

Mo9000

Active Member
Well, not feeding every water, is obviously working for you. If you burn it you just tone down the nutes, not eliminate... but you and your experienced friends obviously know better,
Algae on perelite? You need better air circulation.

Sour d in 1 gal pot, coco, perelite, hydroton. It's never been flushed. I feed/water every other day.
View attachment 4034256

Good luck, I'm sure it'll turn out fine. Keep in mind topping will slow growth a little.
SH420
No no, please i wasnt implying that me or any of the people i have spoken to know better about this than you, obviously i dont even know you and could never make such an assumtion, i know for a fact that i know basically nothing compared to you because this is my first time growing in coco, all i was saying is that it is not absolutely imperative to feed every watering in order to grow a plant in coco, from what i have read on various guids and been told from many people is that feeding every other watering is kind of a safety measure to ensure no salt buildups. These are not my "friends" these are experienced growers who make guids and give advice to newby's like me, and this is what i have been told to do as a response to the nutrient burn and the algae growth respectivly, but maybe what ive been told is completely wrong, idk. But thank you very much for your help, in your opinion do you think not feeding every watering could be the real cause of such painfully slow growth? Keeping in mind im using cfls?
 

shrxhky420

Well-Known Member
You're overly concerned about salt build up. It happens, yes, but not after one feeding. Think about it, people will feed multiple times a day or feed daily with a flood.
It's not recommended that you water with just plain ph'd water when using coco. It's inert and hold no nutritional value to your plant, that's why the continued feedings. Soil holds those nutes.
You should use some sort of cleanser when you do flush. I use this every 2 weeks

General Hydroponics FloraKleen QT - Mineral Salt Clearing Solution FLORAKLEEN Salt Clearing Solution FloraKleen removes fertilizer residue that can accumulate over time in hydroponic systems, growing media and potting soils. Use FloraKleen monthly to purge your hydroponic system or potted plants of excess salts that can accumulate as a result of regular fertilizer application. FloraKleen is an excellent final flush and can be used at any time to dissolve mineral and salt buildup. Its high concentration and low price make FloraKleen the economical choice for maintaining your plants in both hydroponic and soil based environments.

Do a good flush, repot your girl. Break up the root ball really well but try not to damage the roots. Make sure your ph is in 5.5-6.0 range.
It's ok not to water everday as your roots develop but not recommended to let the coco dry.
Plants react quickly in coco. Oh one other thing, seems calcium and/or magnesium is typically an issue when growing in coco. I use cali/magic... along with a line up of other stuff.

SH420
 

Mo9000

Active Member
You're overly concerned about salt build up. It happens, yes, but not after one feeding. Think about it, people will feed multiple times a day or feed daily with a flood.
It's not recommended that you water with just plain ph'd water when using coco. It's inert and hold no nutritional value to your plant, that's why the continued feedings. Soil holds those nutes.
You should use some sort of cleanser when you do flush. I use this every 2 weeks

General Hydroponics FloraKleen QT - Mineral Salt Clearing Solution FLORAKLEEN Salt Clearing Solution FloraKleen removes fertilizer residue that can accumulate over time in hydroponic systems, growing media and potting soils. Use FloraKleen monthly to purge your hydroponic system or potted plants of excess salts that can accumulate as a result of regular fertilizer application. FloraKleen is an excellent final flush and can be used at any time to dissolve mineral and salt buildup. Its high concentration and low price make FloraKleen the economical choice for maintaining your plants in both hydroponic and soil based environments.

Do a good flush, repot your girl. Break up the root ball really well but try not to damage the roots. Make sure your ph is in 5.5-6.0 range.
It's ok not to water everday as your roots develop but not recommended to let the coco dry.
Plants react quickly in coco. Oh one other thing, seems calcium and/or magnesium is typically an issue when growing in coco. I use cali/magic... along with a line up of other stuff.

SH420
Thanks so much man, this helps a lot, really appreciate it, and yeah i am using a cal/mag suplement. :)
 

Mo9000

Active Member
You're overly concerned about salt build up. It happens, yes, but not after one feeding. Think about it, people will feed multiple times a day or feed daily with a flood.
It's not recommended that you water with just plain ph'd water when using coco. It's inert and hold no nutritional value to your plant, that's why the continued feedings. Soil holds those nutes.
You should use some sort of cleanser when you do flush. I use this every 2 weeks

General Hydroponics FloraKleen QT - Mineral Salt Clearing Solution FLORAKLEEN Salt Clearing Solution FloraKleen removes fertilizer residue that can accumulate over time in hydroponic systems, growing media and potting soils. Use FloraKleen monthly to purge your hydroponic system or potted plants of excess salts that can accumulate as a result of regular fertilizer application. FloraKleen is an excellent final flush and can be used at any time to dissolve mineral and salt buildup. Its high concentration and low price make FloraKleen the economical choice for maintaining your plants in both hydroponic and soil based environments.

Do a good flush, repot your girl. Break up the root ball really well but try not to damage the roots. Make sure your ph is in 5.5-6.0 range.
It's ok not to water everday as your roots develop but not recommended to let the coco dry.
Plants react quickly in coco. Oh one other thing, seems calcium and/or magnesium is typically an issue when growing in coco. I use cali/magic... along with a line up of other stuff.

SH420
Also sorry man i know this is off topic but could you tell me if this a boron deficiency, its got me a bit worried as it looks pretty serious and appeared within a matter of hours after i saw the first few spot on a few leaves, what i find strange though is that this has only appeared at the end of one branch. Its kind of hard to see in the pic but the leaves are turning brown, twisting and shrivelling up.WP_20171029_10_56_44_Pro.jpg WP_20171029_10_56_35_Pro.jpg
 

bird mcbride

Well-Known Member
I run fertilizer on every watering but the nutes are cut back to 1/6 of what is recommended by the instructions for outside plants.

Always use liquid fertilizer for co co.
 

ANC

Well-Known Member
Thanks man, but I actually live in a remote little place in a country called South Africa, dont know if you ever would have heard of it. Ive looked all over for temp and humidity meters around my area, but had no luck. Perhaps ill find something online that can be couriered to me, but thanks for the advice :)
E-bay. That's how I get all my shit cheaply. But we have some online grow shops, or you can hit bidorbuy if you want stuff fast at a premium.
 

shrxhky420

Well-Known Member
Also sorry man i know this is off topic but could you tell me if this a boron deficiency, its got me a bit worried as it looks pretty serious and appeared within a matter of hours after i saw the first few spot on a few leaves, what i find strange though is that this has only appeared at the end of one branch. Its kind of hard to see in the pic but the leaves are turning brown, twisting and shrivelling up.View attachment 4034661 View attachment 4034662
Quite possibly. Not too sound like an asshole but I'm good at it, so here goes.
Know what can cause boron deficiency? Under watering. Know what causes slow growth? Boron deficiency. Lol. Ok, check this link out,

http://www.growweedeasy.com/boron-deficiency-cannabis

SH420
 

Mo9000

Active Member
Quite possibly. Not too sound like an asshole but I'm good at it, so here goes.
Know what can cause boron deficiency? Under watering. Know what causes slow growth? Boron deficiency. Lol. Ok, check this link out,

http://www.growweedeasy.com/boron-deficiency-cannabis

SH420
No not at all man, im only greatful for shared knowledge. Things seem to be piecing together. looking through the link now, and all the symptoms of and the conditions that cause boron deficiency seem to line up perfectly with what my plants going through and the condition of my room (low humidity, underwatering, and now the slow and twisted growth) so yeah thanks so much for the link. Looks you like have identified my problem, really do appreciate it. :)
 
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Mo9000

Active Member
I run fertilizer on every watering but the nutes are cut back to 1/6 of what is recommended by the instructions for outside plants.

Always use liquid fertilizer for co co.
Yeah thanks, ive been doing some more in depth research into why it is important to feed with ever watering for coco, and it is making a lot more sense to me now. Guess ive always just been scared of overnuting.
 

budsugar

Member
this might sound a little silly but have you considered moving the light further away to let it stretch a little?

Have the nodes so close to each other and so often cant be doing it cant favours?

I might be wrong.
 

Mo9000

Active Member
this might sound a little silly but have you considered moving the light further away to let it stretch a little?

Have the nodes so close to each other and so often cant be doing it cant favours?

I might be wrong.
I have actually thought about this too, so no doesnt sound stupid at all to me. Ive just always been told that you want to keep cfls about an inch away from the plant, but i am aslo wanting to keep my plant as short and bushy as possible so i can make maximum efficiency of the cfls short range, but i dont know, you do make an interesting point, ill do some more research into it
 

budsugar

Member
Awesome, let me know what conclusion you come to.

It must suck to be in this situation but its very interesting regardless. Best of luck, Mo.
 

MickFoster

Well-Known Member
Nutrients don't build up in coco like soil, so feeding every day is preferred because using plain water messes up the Cation Exchange Capacity. Also, you will never get salt build up if you always feed to run off - this renews the nutes and pulls in fresh oxygen to the roots. If you let the coco get dry or use just water - you are guaranteed eventual problems. Coco is hydroponics.
 
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