My babies are 2 weeks old and starting to yellow! HELP!

[leglesscrow]

My plants are about two weeks old now and they are starting to yellow a little bit, and I also have one thats not acting like its wanting to grow very well. I was wanting to wait two more days before I put them in the Hydroponic system and started feeding them. They were doing great until I transfered them to the rockwool. Now as the new lwaves come in the have a bit of a yellow tint to them. Please check out the pics and let me know what do I need to do?

leglesscrow Reviewed by leglesscrow on 07-08-2009. My babies are 2 weeks old and starting to yellow! HELP! My plants are about two weeks old now and they are starting to yellow a little bit, and I also have one thats not acting like its wanting to grow very well. I was wanting to wait two more days before I put them in the Hydroponic system and started feeding them. They were doing great until I transfered them to the rockwool. Now as the new lwaves come in the have a bit of a yellow tint to them. Please check out the pics and let me know what do I need to do? Rating: 5

[sneekymofo]

Hmmmm....could be a lot of things at this juncture. What's your pH in the cubes? What process did you use to ready the RW? What kind of lights are you using at this stage? How about heat / ventalation? These details might help diagnose....

[goosie]

My plants are about two weeks old now and they are starting to yellow a little bit, and I also have one thats not acting like its wanting to grow very well. I was wanting to wait two more days before I put them in the Hydroponic system and started feeding them. They were doing great until I transfered them to the rockwool. Now as the new lwaves come in the have a bit of a yellow tint to them. Please check out the pics and let me know what do I need to do?

MMmm....what soil did you use? did it have slow release fert in the soil? if so have you been feeding them aswell? and how often are you watering?
Looks to me as if its nute burn or over watering?
Just my opinion mate.
id not water them for 2-3 days.
The same kinda thing happened to me and it was due to over watering

Hope they turn for the best for you.

[leglesscrow]

Hmmmm....could be a lot of things at this juncture. What's your pH in the cubes? What process did you use to ready the RW? What kind of lights are you using at this stage? How about heat / ventalation? These details might help diagnose....

My pH is about 5.6 im using the General Hydroponics test kit with the GH up and down. I started them in a 6 pack starter plug medium suggested to me by the guys at HTG Supply. Im using the HTG Supply T5HO 4ft. Fluorescents with two blue spectrum grow bulbs in each of the 2 ballast. I am currently running them 24hrs per day. Heat stays around 70 - 74 degrees. Ventilation is simply an 18" Oscillating fan (there's only 4 plants so I didnt really see a huge need in a big expensive ventilation system) I let the plants germinate in the 6 station starter plug medium for about a week and a half before transferring them into the rock wool that had been soaking in a pH of 5.5 for about a day and a half. This was two days ago.

MMmm....what soil did you use? did it have slow release fert in the soil? if so have you been feeding them as well? and how often are you watering?
Looks to me as if its nute burn or over watering?
Just my opinion mate.
id not water them for 2-3 days.
The same kinda thing happened to me and it was due to over watering

Hope they turn for the best for you.

Its very possible that I am over-watering. Ive been watering once a day everyday. Im not using any soil and I have not fed them ANY nutrients. I simply Put the seeds in the starter plugs and watered them. They were looking GREAT until I put them in the rock wool now they're starting to yellow.

[Hempsouth]

Slightly overwatered for those temeratures.

How close are the lights? It looks like they don't like something about the spectrum.

[leglesscrow]

Slightly overwatered for those temeratures.

How close are the lights? It looks like they don't like something about the spectrum.

the lights are six to eight inches above the plants.

[Hempsouth]

Try dropping the lights down about and inch or two, with your fan heat will not be an issue.

Weak light can cause yellowing, but yours are not stretching which is weird, normally when the light is defficient the seedlings stretch and fall over.

A real weak dose of nutrients will not hurt them at this stage, like 1/10 strength.

[leglesscrow]

Try dropping the lights down about and inch or two, with your fan heat will not be an issue.

Weak light can cause yellowing, but yours are not stretching which is weird, normally when the light is defficient the seedlings stretch and fall over.

A real weak dose of nutrients will not hurt them at this stage, like 1/10 strength.

Keep in mind they are not in the Hydroponic system yet, would mixing the nutes and pouring them over the rock wool hurt them?

[LOC NAR on probation]

2 weeks and they need to be fed. Young ones don't need food for 2 weeks, It's time. Do not mix and just pour over them. They need 1/4 to 1/2 nutes now and be put in the system to keep from over watering. Actually there is not such thing a overwatering or there would be no hydro. The thing is not to let the rootball stay wet all the time. That is why we time our drips and floods. NFT never drowns the rootball, The roots hanging down are water roots and can stay deep in the water. The rootball needs several hours of good air each day to stay healthy. That's why DWC and bubblers works so well, they never soak the rootball.

Get them in a system and the just the top of the rockwool will dry out some and be fine. Your girls will be just fine when they get some nitrogen. Good luck and keep us up on how you did.

OH, what kind of system you got ?

[leglesscrow]

2 weeks and they need to be fed. Young ones don't need food for 2 weeks, It's time. Do not mix and just pour over them. They need 1/4 to 1/2 nutes now and be put in the system to keep from over watering. Actually there is not such thing a overwatering or there would be no hydro. The thing is not to let the rootball stay wet all the time. That is why we time our drips and floods. NFT never drowns the rootball, The roots hanging down are water roots and can stay deep in the water. The rootball needs several hours of good air each day to stay healthy. That's why DWC and bubblers works so well, they never soak the rootball.

Get them in a system and the just the top of the rockwool will dry out some and be fine. Your girls will be just fine when they get some nitrogen. Good luck and keep us up on how you did.

OH, what kind of system you got ?

The GH feed chart calls for 1.5ml of Gro, Micro, and Bloom for the "seedling phase". Is that already cut to half or am I supposed to do half of that?

I am using a 5 gallon bucket, drop-in net pot, hydroton, rockwool starter cubes, and an airpump / airstone with GH nutes. (I forget what the technical term for that system is.)
(This is a "DRAIN TO WASTE PROGRAM" (according to the GH feed chart) though right?)
Also real quick, my buckets are from Home Depot and they are orange, should I paint them black to prevent light from getting in?
And how much water should I put in them (I.E. How far should the bottom of the net cup be in the water)?