Please help, help help.....

no1da

no1da

Member
i need help with my 3 little girls... all autoflowering, feminized and planted 10 days ago. growing under 250 watt CFL (20 hours on - 4 hours off) kept at about 3 inches off the light bulb. growing in a white grow room size (60x60x120). planted in biobizz all mix soil, no nutrients used. there are two small fans for intake and two fans for out take, humidity up and down but between 30%-50% depending where humidifier is placed. temp. varies between 27 - 31. watering every second day only when the soil is dry and only small amounts to moisture the soil. the last three days the plants have started to go from yellowish - brown..
photo (1).jpg

Please please help, each day i see it getting worse, i think i still have time to save them....
 
bass1014

bass1014

Well-Known Member
yeah u need to get them in there final pots to finish out.. the lil ones look ok to me there green and alive.. so put them in there final pots and go from there.. one day at a time..
 
no1da

no1da

Member
thanks so much for your replies, i will place them into their final pots, see if that helps...
its a bit hard to see in the picture but the plant on the right side is a lot yellower as it has its two main leaves yellowing from outside - in and not just the cotyledons.. and the other two plants on the left are starting to follow the same pattern...
 
ThorGanjason

ThorGanjason

Well-Known Member
Yeah I see that yellowing on the one on the right. Looks like a nitrogen deficiency, which is very uncommon in plants this young. In fact, I'm really not wanting to think that that's what it is, BC nitrogen def. can happen to seedlings this young but usually happens from over watering. (Edit: forgot to point out that if you are watering every other day in pots that small there's no way they are staying wet enough).

You said you are only watering every other day? And are those the biodegradable pots? I start my seedlings in those and they dry up in like 5-6 hours, but I have them under a 400 watt metal halide.

You might want to consider a little calcium nitrate maybe? Its water soluble and would give calcium and nitrogen. Those seem too small to give any kind of NPK nutes.

What about your temperatures?
 
no1da

no1da

Member
ThorGanjason said:
Yeah I see that yellowing on the one on the right. Looks like a nitrogen deficiency, which is very uncommon in plants this young. In fact, I'm really not wanting to think that that's what it is, BC nitrogen def. can happen to seedlings this young but usually happens from over watering. (Edit: forgot to point out that if you are watering every other day in pots that small there's no way they are staying wet enough).

You said you are only watering every other day? And are those the biodegradable pots? I start my seedlings in those and they dry up in like 5-6 hours, but I have them under a 400 watt metal halide.

You might want to consider a little calcium nitrate maybe? Its water soluble and would give calcium and nitrogen. Those seem too small to give any kind of NPK nutes.

What about your temperatures?
Click to expand...

Thank you for your time taken to help me out.

I was watering them once a day before but then i switched to watering every second day as i read a lot that many people over-water them, and they do get dry very quickly and yes they are in biodegradable pots. My temperature is always around 26 - 30 degrees when the lights are on but not sure what it is during 4 hours of lights off.

Would you be able to recommend any particular product for calcium nitrate?
 
dannyboy602

dannyboy602

Well-Known Member
Idk what calcium nitrate is off hand. Mb dolomite lime instead? Theres your calcium and magnesium in one hit. Usually little seedlings like yours dont get fed for the first month or so. Your soil looks dry in my considered opinion.
 
no1da

no1da

Member
the plant in question seems to have gotten a lot worse, i have watered it and im keeping a constant close eye on the little girl but her tip leaves are now turning brown and now im scared of placing it into its final pot as i do not wish to cause it any unnecessary stress..

the other two girls seem to be okay, well i hope they are..
CIMG4510.jpgCIMG4511.jpgCIMG4513.jpgCIMG4514.jpgCIMG4515.jpg
 
iblazetoomuch

iblazetoomuch

Active Member
I already noticed dolomite lime was mentioned, but what is the pH of the water your using? I'm still on my first grow but I had problems using 7.0 r/o and 8.0 tap un pH'd water; just thought I'd ask if you were pHing the seedling water? Best of luck bud, I had similar issues early on with few of my seedlings, hope you can figure it out to prevent it from happening again!

edit: I see your using biobizz medium, thought id mention pH barring this medium wasnt the type that buffers pH itself, I responded before really thinking about the medium difference in my situation, maybe it was a unnecessary suggestion to check pH if thats the case with your medium, anyhow good luck.
 
no1da

no1da

Member
i have measured ph levels and they are at about 7.0 but im not sure how accurate the reader is itself as i did buy a cheap one, however i will take your advice and try to bring it down, as i am also using tap water.

thanks.
 
smokin away

smokin away

Well-Known Member
I had this same problem several times. I'm still trying to find the sure fire cure. I've had luck with an inexpensive ph meter. One the that registers moisture light and ph. I'm figuring the test results from it are just an average guess at best. A more precise ph meter will be my next purchase for sure. I took some tap water and added some apple vinegar to reduce ph to about 6ph. It seems to really perk the newbies up. The only nutrient I feed the newbies is half strength fish fertilizer (3-1-1) at four teaspoons to a gallon. I only add it very sparingly. Take a small stick and probe the soil around it. If it looks dry on top it needs moisture but careful not probe to deep. Go with water + vinegar one time then use the nutrient solution when it perks up. Definitely put those biodegradable pots into a larger pot with some good soil mix. Water the pots down real good for a day or two before transplanting then it won't need any water for few days until the soil on top dries out. 8)

I stand corrected on 6ph. This graph states it should be 6.3. The wonder of digital equipment.
 
jfart

jfart

Well-Known Member
try cal mag

no1da said:
Thank you for your time taken to help me out.

I was watering them once a day before but then i switched to watering every second day as i read a lot that many people over-water them, and they do get dry very quickly and yes they are in biodegradable pots. My temperature is always around 26 - 30 degrees when the lights are on but not sure what it is during 4 hours of lights off.

Would you be able to recommend any particular product for calcium nitrate?
Click to expand...
 
no1da

no1da

Member
smokin away said:
I had this same problem several times. I'm still trying to find the sure fire cure. I've had luck with an inexpensive ph meter. One the that registers moisture light and ph. I'm figuring the test results from it are just an average guess at best. A more precise ph meter will be my next purchase for sure. I took some tap water and added some apple vinegar to reduce ph to about 6ph. It seems to really perk the newbies up. The only nutrient I feed the newbies is half strength fish fertilizer (3-1-1) at four teaspoons to a gallon. I only add it very sparingly. Take a small stick and probe the soil around it. If it looks dry on top it needs moisture but careful not probe to deep. Go with water + vinegar one time then use the nutrient solution when it perks up. Definitely put those biodegradable pots into a larger pot with some good soil mix. Water the pots down real good for a day or two before transplanting then it won't need any water for few days until the soil on top dries out. 8)

I stand corrected on 6ph. This graph states it should be 6.3. The wonder of digital equipment.
Click to expand...

Thanks a lot for the graph i will use it for my future reference. I have also ordered a new digital ph reader which should fix the tricks as the one i currently use has gone completely haywire. also the plants have been replanted into their final pots and they look lively once they are settled in i will update the situation as at the moment not much has changed in the plant.
 
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