DWC trouble with seedlings

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danneede

Member
nirvana AI and AK
2 weeks from regular seed
PH 5.5 - 6.0 ppm 220
tap water ppm 200 + 20 ppm of Pro tekt
3 cfl 40 watts each
temps 69-75 RH 40-60%
DWC 2 4 gal res with 6 3" net pot filled with hydroton and 1 inch rockwool cube i started the seeds in each 4 gal res
rockwool was ph was adjusted before use
12 inch air wands in each res
dual outlet 4l/min air pump
any other info just ask any and all help appreciated

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zem

zem

Well-Known Member
from the info given i suspect it's the 1" RW cube being soaked constantly, only thing you can do is wait till roots grow out of it down into the solution, then it will be less of a problem. might also want to add a little bit of nutes, only a little bit maybe raise it to the 300ppm levels. JMO
 
BeaverHuntr

BeaverHuntr

Well-Known Member
Those babies look hungry they are eating the nitrogen from the lower leaves. Your tap water is at 200 and you are only adding 100 PPM of nutes? I dont use tap I always use Reverse Osmosis close to zero PPM your seedling should be eating about 250 PPM at this stage.
 
TheJointProject

TheJointProject

Well-Known Member
damn beaver....you beat me to it. +rep for that LOL
Up those nutes to 250-300ppm and they should perk up in a few days. note: the damage that is done will not heal itself but new growth should be normal.
Good luck
 
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danneede

Member
cool thats what i was thinkin just wasnt sure i think the rockwool being soaked all the time is part of the problem as well. the only thing that made me not want to give more nute was that the cotyldon leaves or what ever the seed leaves are called are still really green, i just hope they hang on cuz they look alot worse today.
 
BeaverHuntr

BeaverHuntr

Well-Known Member
TheJointProject said:
damn beaver....you beat me to it. +rep for that LOL
Up those nutes to 250-300ppm and they should perk up in a few days. note: the damage that is done will not heal itself but new growth should be normal.
Good luck
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No worries JP I know you know your stuff!
Yeah dude the same thing happened to my Super Lemon Haze they were hungry but dont harsh your mello they will heal themselves.
 
E

enjoi8

Member
Im new to dwc, is there a better way to start a seedling for dwc other than a jiffy cube?
thanks a lot
 
BeaverHuntr

BeaverHuntr

Well-Known Member
enjoi8 said:
Im new to dwc, is there a better way to start a seedling for dwc other than a jiffy cube?
thanks a lot
Click to expand...
Cloners cost some money unless you want to do it yourself. Heres what I do and it works pretty well... First i germinate via the paper towel method. Once seedlings show tap root I put into a rapid rooter plug and insert it in a dome/tray with a heating mat underneath it, I fill up with about half a inch of PH water, I also mist the dome twice a day or so. After a good week you should have roots showing all around the rapid rooter plug. Once that happens I transfer to DWC buckets with 1/4 strength nutes.
 
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danneede

Member
ooo from seedling. my b, i thought he said from clone. it dont get much easier then rockwool cube as long as u ph it.
 
BeaverHuntr

BeaverHuntr

Well-Known Member
danneede said:
ooo from seedling. my b, i thought he said from clone. it dont get much easier then rockwool cube as long as u ph it.
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I hate rockwool , make sure you shake the shit out of it if you decide to use it. If you want a easier approach over rockwool try out rapid rooter plugs. They work awesome almost fool proof because you dont need to PH them.
 
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danneede

Member
hmm interesting i'll have to check em out next time i hit up the shop. the more i work with rock wool the less i like it.
 
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danneede

Member
Also, id like to report the AI and AK are making a recovery and starting to look good again. When should i bump up the nutes again and to how much?
 
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