Bottom growth turning yellow early in veg. new growth is healthy green

[firsttimeARE]

Ec is .77
Ppm 580
Ph 5.8
Temps at night 61F
Temps at midday 78F
Humidity 40-58%

Plants are about 4 weeks into veg from seed and their cotyledons turned yellow and it seems like its working its way up the stalk affecting each set of leaves pretty much ever since I put them in the flood table. The leaves are also drooped down. And on some the leaves after they turn yellow the tips get crispy and fall apart at the ends.

I'm running floods every 4 hours in growstones with rockwool cubes in the center. The yellowing started off on only one plant then it moved to another(these were the dryest of the cubes and now that I moved the damp ones up a bit they seem to be yellowing now also.)

I'm on my phone when I get home ill post pictures of what they look like. On my journal I have pics from a few days ago when only a 2 were yellowing. I know it'll be hard to diagnose something without pictures so ill get them up soon.

Do you think the root mass in the RW is too dry and the plant is underwatered as a result?

 

[maps84]

From what you're saying it could be N or MG. Either way they're asking for more food IMO. Have to look at them like you said to really diagnose something.

 

[firsttimeARE]

Yeah so I bring the camera to the spot today and its dead. It seems that the one that started yellowing first is the least bit yellow now that its in the deeper water it seemed to stop yellowing. The leaf that started is still the same green as it was a few days ago and the bottom leaf is the only one that's yellowing and falling apart. The rest have gotten worse as this one is staying the same. I moved them all to this deeper corner and topped up my res about 5 gallons. The RW was still wet from yesterday when I fed them. I think they're in the flood level though now that I topped the res up and that's why they're still wet. Once I move it to the tray and level it off imma adjust the pots so the rw isn't getting wet.

I'm going to charge the camera and take some pictures tommorow. For now once I get home ill take the pictures off of the journal and post em up here. I don't expect any of you to be able to help at this point. If you could that'd be awesome but I'm not holmding out much hope.

Thanks for reading fellow tokers.

 

[firsttimeARE]

I think its worth mentioning I'm using floramicro and florabloom 2.5/5ml per gallon respectively

 

[maps84]

Up to 5 and 10, it's time.

 

[firsttimeARE]

I have a res change due thursday. Maybe i'll just up it to tuesday, cant do it today too busy.

 

[firsttimeARE]

Also all these are 5 weeks from seed and they're 2-3 inches tall. I'm thinking not enough nutes? Red tint is phosphorus deficiency? Yellow tips nitrogen and potassium? Stunted growth is a mix of it all?

Been reading a lot of that article in ICmag by Dr. Stitch. Very informative.


These are of the one with retarded growth


One with the phosphorus def?

 

[maps84]

I'm sorry it isn't time to up the nutrients. The plants are rejecting the medium... still trying to adapt.. They look so droppy that rot root could be in order too, the cubes look too wet, like really soaked when it shouldn't . Superthrive and Hygroenyme would help a lot.

 

[firsttimeARE]

Root rot? No way. Those cubes are bone dry man. Maybe over watered? They were getting floods every 2 hours before I changed to 4. I'm doing 6 hours now. They're half inch above flood level. Must be the lighting? I'm also dosing every 4 days with 7ml 30% h2o2 per gal water

What would cause them to hate the medium? I soaked the stones in phed water. Rinsed them prior for a good amount of time. Or is it just the change?

Res temps are around 18-20C

 

[firsttimeARE]

Is there any chance that this will stop once they get adjusted. Also wondering why they're growing so slow. At first I thought it was the nutes. I gave them some 400ppm nute solution when they first started off. When plants get stunted are they stunted their whole life or will they bounce back? 5 weeks is too long to only have a 2 inch tall plant considering a lot of people only veg for that long

 

[firsttimeARE]

Hmmmm, anyone wanna help my restless mind sleep at night. been up all night worrying about my babies

 

[bigbud2012]

why dont u just go with compost? why all this cube shit lol i understand its easier etc with a cube but damn man get some compost in ya pots ....

 

[bigbud2012]

ill tell u something else too i grew clones with compost way back and they grew like wildfire

 

[maps84]

Thing is H2o2 is not good for young plans, cuttings or seedlings. You should use up to 5ml per gallon only in case of an emergency. To keep the medium and the roots clean get some Aqua Shield or Hygronzyme, and also SuperThrive to help them bounce back. Rot root is one of the consequences of over watering that's why I put it out. Hope it's not

 

[apbx720]

i would scrap those sumnguns and start new. i had bad experiences w rockwool and will never use it again. u should try some other plugs like starter plugs or root riot or something. also u might try hydroton (expanded clay pellets). not trying to tell u what to do. just giving options

 

[firsttimeARE]

Thing is H2o2 is not good for young plans, cuttings or seedlings. You should use up to 5ml per gallon only in case of an emergency. To keep the medium and the roots clean get some Aqua Shield or Hygronzyme, and also SuperThrive to help them bounce back. Rot root is one of the consequences of over watering that's why I put it out. Hope it's not

I used super thrive at first but since I moved to the table I haven't put any in. Do you do a top feed or put it in the res? The main stem feels sturdy and strong. And yeah? I always thought h2o2 was fine at any stage. Not doubting you, just thought I read it was ok somewhere. But I probably did, everyone has their own way I guess. I'll look into the hygronzyme and some aqua shield.

And yeah I know keeping RW saturated and RH high is a recipe for root rot which is why I keep the RW above the flood level and my RH below 60 while in veg. They're bone dry even after waterings. The roots that were out the sides are browned up and dry looking. I think because theyre not getting water they got air pruned?

Thanks for the response mate

 

[firsttimeARE]

i would scrap those sumnguns and start new. i had bad experiences w rockwool and will never use it again. u should try some other plugs like starter plugs or root riot or something. also u might try hydroton (expanded clay pellets). not trying to tell u what to do. just giving options

Not sure it was the RW. I'm starting 4 chronic haze's the right way. No nutes, soaking RW in 5.0 ph water. Just spun them out in the salad spinner and tested the run off left in the spinner and it was 6.2 so I chucked that water and put more 5.0 water in. Tomorrow morning i'm going to do the same and test the run off. Spin them cubes down to about 25g each and plant and put on heatpad and put in a humidome.

Hopefully these work out. I'm getting discouraged quick.

But i'm going to follow masp's advice and use some superthrive. Hope they make it. They're still putting out green growth.

 

[maps84]

You're welcome pal. You add the super-thrive to the main res.. I think it's a drop per gallon or something like that, the instructions are on the label.

I used to use H2o2 for everything and probably failed all my previous attempts on cloning due to this. Aqua Shield came with a combo of nutes I bought... Anyways, I gave it a shot and I was instantly sold. It was like I had a maid cleaning my grow, from the plants to the system, everything stays clean, you don't have to bother about oxidized salts builds up of H2o2.and plants benefit a huge deal from this bacteria products to grow way better. I came back to the forum with my findings and the best rated product was Hygrozyme although it's more expensive than aqua shield.

 

[firsttimeARE]

You're welcome pal. You add the super-thrive to the main res.. I think it's a drop per gallon or something like that, the instructions are on the label.

I used to use H2o2 for everything and probably failed all my previous attempts on cloning due to this. Aqua Shield came with a combo of nutes I bought... Anyways, I gave it a shot and I was instantly sold. It was like I had a maid cleaning my grow, from the plants to the system, everything stays clean, you don't have to bother about oxidized salts builds up of H2o2.and plants benefit a huge deal from this bacteria products to grow way better. I came back to the forum with my findings and the best rated product was Hygrozyme although it's more expensive than aqua shield.

So you think its transplant shock what my plants are showing? Not nute deficiencies or lockout?

I'm due for a res change this weekend, if I get a chance to go to the hydro store i'll pick some hygrozyme up and use it.

And yeah superthrive is 1ml per gallon. I just used some to soak my RW in. I'm trying to do this new set of 4 right. About when do they need nutes? And i'm putting them in the ebb&flow when I see roots coming out the bottom of the RW. Is that too soon for nutes?

 

[maps84]

We can't talk right now about deficiencies, but they're definitely shocked whether from transplant or over-watering which seems most likely the case. I also insist on the root rot.. you already said there was brownish roots where they should be white. That'd explain all the symptoms the plants are showing. Hygrozyme would help a lot IMO.