Hi guys, got a prob with my 2 critical mass babes, theyre in a recirculation tub system, got a 600w hps above them, setup is pretty good as far as im aware. Theyve been vegging for a month now and are only 10inches tall, last time i did it at this stage they were about 2foot tall! I may have overfertilised them a couple of weeks in and didnt flush out, just replaced the mix with a slightly weaker mix. They seem to have pretty much stopped growing though, theyve been the same height for well over a week now, they just dont seem right. Everything im doing this time around is better though, i didnt have a swivel fan in tent last time, and the ventilation was crap last time but they still grew very well. These ones surely should be much bigger than what they are! Ive just put them on a 3day flush cycle today, and will put a fresh mix in saturday. Am i wasting my time with them, or should i just whack em on flower and hope that they take off??? Any help please!!!! Sorry no pics.
Stunted/Stopped growth in veg stage????
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ganjaluvr
Well-Known Member
could be nute lock bro... have you had to re-pot the plant? sometimes that will cause a little bit of shock.. or slowed growth.. and possibly even no growth.. for a few days or so.. until the plant has had time to recover and get established.
Then again, it could be any kind of stress that you may have caused to the plant.. even without doing it on purpose.. it can happen.
But, I'm leaning towards nute lock.. or what they also call.. 'root lock'. When the roots kinda go into a 'hibernation' period (if you will..) where they stop growing.. in order to recover from the stress.. and to prevent any further damage as well.
Hope this helped you out some..
Then again, it could be any kind of stress that you may have caused to the plant.. even without doing it on purpose.. it can happen.
But, I'm leaning towards nute lock.. or what they also call.. 'root lock'. When the roots kinda go into a 'hibernation' period (if you will..) where they stop growing.. in order to recover from the stress.. and to prevent any further damage as well.
Hope this helped you out some..
Yea i think that sounds about right actually, acting on some 'advice' from a friend, he didnt think id buried the rockwool cubes deep enough in the clay pebbles, so i dug both the babes out, made a deeper hole for them, then stuck em straight back in. Do you think this pulling out of the plant and its roots caused a big shock? I did this over 2 weeks ago so i would have thought theyd recover by now??? I cant even see any roots through the bottom of the top tray holes, they should be in the water by now shouldnt they??? I really hope they recover!! i wana stick em on flower within a week or 2 but theyre only 10 inches tall so might be pointless?
My mates even suggesting to get rid of them and get some new clones, but im thinking i should persevere....
My mates even suggesting to get rid of them and get some new clones, but im thinking i should persevere....
YOUNG BUCK
Well-Known Member
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Added by: snoofer Last edited by: snoofer Viewed: 527 times Rated by 36 users: 8.19/10Contributed by: tOkE_tHe_DoPe
Thanks to: Ranger2000, 10k, Hopefulgrower, Snoofer
Submitted: 15-02-2003
Overwatering
Soil moisture that is not absorbed rapidly turns stagnant; the plant quickly uses up any oxygen within the water, then is unable to respire further, resulting in moisture low in o2. Pythium thrives in low-oxygen (anaerobic) conditions.
In short, overwatering will slowly suffocate your roots, preventing sufficient oxygen uptake by the roots, and ultimately causing root rot.
Soil with high bark content
This can cause a “bonsai” effect. The roots will not be able to grow through the bark, preferring to grow around the chunks of bark. This slows down root growth and most obviously plant growth. Ive encounter this recently; once transplanted into proper soil, they have shown remarkable recovery.
[Editor's note: bark is quite acidic, may may afect soil water pH]
Light deprivation
Although your plant may be receiving light, particular strains may require higher light levels than others. A recommended light level for full bud development is 50 watts/m2. Full sunlight is 100,000 lumens max.
Low nutrient strength
The plant is unable to acquire the necessary amounts of nutrients to sustain high growth rates. Large and mature plants can take higher nutrient strengths.
Nutrient strength is also related to the light intensity; plants under fluorescent lights usually require a lower nutrient concentration than under HIDs.
Nutrient lockup
Adding too much of a nutrient (ex. Magnesium) can “lockup” one or more nutrients, rendering them chemically unavailable to the plant. Nutrient lockup can occur at extreme pH ranges (ie. under 5.0, over 7.0).
by Ranger2000:
Light spectrum
Light that does not contain enough red spectrum (too much blue)
Light spectrum can have a dramatic effect on plant growth, with different ligh frequencies affecting different photosynthetic processes within the leaf. Selecting a blue spectrum in a vegetative growth phase is preferred, with red spectrum in flowering.
pH
pH is too high or too low (ie. acidic soil. The plants come out as mutants).
Plants are unable to absorb nutrients, or in adequate quantities within certain pH ranges. Optimum pH varies with each medium. Hydroponics and aeroponics: 5.6-5.8. Soilless: 6.0-6.3 Soil: 6.5-7.0.
Many soilless mixtures can be fairly acidic, due to their high % bark content.
Low temperatures
Plant metabolism will decrease at low temperatures. Chemical reactions within the plant will take longer. Optimum plant growth often requires close temperature regulation; daytime temperatures between 25C and 30C are preferred. Differences in daytime and nighttime temps should not be dramatic, as this difference may shock the plant.
by 10K:
Low soil / medium temp
Evaporation from a medium (i.e. peat pots) tends to chill the medium quite a bit due to the evaporative cooling effect. As the peat pot warms, it draws moisture outward, the evap effect cools the peat (like sweating). New growers often make the mistake of adding excessive amounts of water, resulting in cold soil, poor root formation and slowed growth.
HOPE THAT HELPS.
Added by: snoofer Last edited by: snoofer Viewed: 527 times Rated by 36 users: 8.19/10Contributed by: tOkE_tHe_DoPe
Thanks to: Ranger2000, 10k, Hopefulgrower, Snoofer
Submitted: 15-02-2003
Overwatering
Soil moisture that is not absorbed rapidly turns stagnant; the plant quickly uses up any oxygen within the water, then is unable to respire further, resulting in moisture low in o2. Pythium thrives in low-oxygen (anaerobic) conditions.
In short, overwatering will slowly suffocate your roots, preventing sufficient oxygen uptake by the roots, and ultimately causing root rot.
Soil with high bark content
This can cause a “bonsai” effect. The roots will not be able to grow through the bark, preferring to grow around the chunks of bark. This slows down root growth and most obviously plant growth. Ive encounter this recently; once transplanted into proper soil, they have shown remarkable recovery.
[Editor's note: bark is quite acidic, may may afect soil water pH]
Light deprivation
Although your plant may be receiving light, particular strains may require higher light levels than others. A recommended light level for full bud development is 50 watts/m2. Full sunlight is 100,000 lumens max.
Low nutrient strength
The plant is unable to acquire the necessary amounts of nutrients to sustain high growth rates. Large and mature plants can take higher nutrient strengths.
Nutrient strength is also related to the light intensity; plants under fluorescent lights usually require a lower nutrient concentration than under HIDs.
Nutrient lockup
Adding too much of a nutrient (ex. Magnesium) can “lockup” one or more nutrients, rendering them chemically unavailable to the plant. Nutrient lockup can occur at extreme pH ranges (ie. under 5.0, over 7.0).
by Ranger2000:
Light spectrum
Light that does not contain enough red spectrum (too much blue)
Light spectrum can have a dramatic effect on plant growth, with different ligh frequencies affecting different photosynthetic processes within the leaf. Selecting a blue spectrum in a vegetative growth phase is preferred, with red spectrum in flowering.
pH
pH is too high or too low (ie. acidic soil. The plants come out as mutants).
Plants are unable to absorb nutrients, or in adequate quantities within certain pH ranges. Optimum pH varies with each medium. Hydroponics and aeroponics: 5.6-5.8. Soilless: 6.0-6.3 Soil: 6.5-7.0.
Many soilless mixtures can be fairly acidic, due to their high % bark content.
Low temperatures
Plant metabolism will decrease at low temperatures. Chemical reactions within the plant will take longer. Optimum plant growth often requires close temperature regulation; daytime temperatures between 25C and 30C are preferred. Differences in daytime and nighttime temps should not be dramatic, as this difference may shock the plant.
by 10K:
Low soil / medium temp
Evaporation from a medium (i.e. peat pots) tends to chill the medium quite a bit due to the evaporative cooling effect. As the peat pot warms, it draws moisture outward, the evap effect cools the peat (like sweating). New growers often make the mistake of adding excessive amounts of water, resulting in cold soil, poor root formation and slowed growth.
HOPE THAT HELPS.
YOUNG BUCK
Well-Known Member
Post some pictures.Its not really helped no, im just wanting to know wether to start again or carry on with these at the moment. I cant waste any more time with em! They just aint doing much, and the leaves are growing very small!
