New Leaves Yellowing On Young Seedlings

[TanzanianMagic]

I would like to ask the following two questions:

1) Have you ever experienced a plant growing in what is the first week of development (cotyledons are out, the first serrated leaves are out), and then the first true leaves are just yellow? If left unattended, they go a parchment color and die.

2) Has this ever happened to you, and what was the problem?

I like to know what your personal experience has been, just to avoid an avalanche of people suggesting what it could be (which would be expensive if I followed up on all of it).

 

[ZeusOGrefugee]

if the first set of true leaves are yellowing already, then those babies prolly are ready for a light dose of nutes...go easy, but they are obviously telling you something...Peace

- Z

 

[lilo]

impossible to tell without more info and phoo but fucked up ph or what is more likely soil is too hot.

and yes i've seen that

 

[D.O.C]

i havde the same problem here, dont know what to do.
it starts this way. and them goes beserk







the clones are Bluetops, about 2weeks in the system, and they f*ck up bad, ive changed the water with new solution,ec 1.56 200ml/100L A, 100ml/100L B + multi enzym + stimolator 1, all house and garden.

the do almost not grow and i cant find anything that fits the problem, its symptoms are opposite N deficienty. the are under a 600W SON-T PIA with spreader 80cm abowe, and the max temp is at plant top 30degrees max

i water them 4min every 4th hour, the PH is pretty stable at 6.0

dont know any further.

 

[master shake]

growin in a hydrohut? there's been weird problems with those...

or you may have an iron deficiency.

 

[D.O.C]

yes i grow ind this one http://bg-support.com/products/dk/Growboxes-Sets/Growbox-XL-125-x-125-x-200-m.html

before i just were growing in a frame of wood with black/white plastic, and never had those problems.

i have been using the same brand of nutes for a long time now and never had any efficientys, so why the sudden, the setup is also pretty mush the same, i just replaced libras with a big plastic tray.

what problems have there been with those huts?

 

[Mr. Bongjangles]

Oh yeah, this looks like growtent / Hydrohut poisioning.

Check out the "New Growth Yellows In My Hydrohut" thread for a lot of reading about the problem.

http://www.icmag.com/ic/showthread.php?t=65544

Here's some seedlings from my poisonous Hydrohut & its poisonous Habitat replacement.





As far as I know, there is nothing you can do to fix the bad tents.. Hydrohut did a recall and the tents still came back bad.

I use a Secret Jardin Darkroom tent myself and have had no problems since. I understand Homebox tents are problem-free as well, so I recommend you guys look into those if you can't build your own.

 

[D.O.C]

omg ill better get that sucker returned.

 

[chiliwalt]

Looks like soil is too hot, or on the hydro shot simply over nuted to me. But I'm ignorant as to the "Hydro Hut" problem, as I don't use them.

Peace, Chili