Seedlings Need HELP!!!

[GardnerFunk]

Please, help me! My seedlings look sick
I put the seeds into Grodan plugs in a covered seed starter on 12/22
The first sprouts popped around 12/25
Around 12/31 I put the seedlings under my T5 for 24 hour light
3 days ago, I transplanted them into larger grodan cubes. They all had white roots coming out of the bottom and looked okay, but not great. One or two brown spots, leaves curling a bit...I thought they needed nutrients. (I pre-flushed all the grodan with 5.5 water and then ran some diluted nutrients through my larger cubes that I transplanted in. Just FYI, I use Mills Parts A&B, Root promoter, calmag, hyrdoguard, vitalize)
The nutrients I'm using-- I've diluted them. I use half of the strength for all nutrients according to their labeling instructions for first week veg.
Help. Please.

 

[GardnerFunk]

I always adjust the ph for nutes to 6.0. The lights are 18 inches above tops of the plants. It's about 70 degrees in the grow room. I did decrease the light three days ago to 18 on/ 6 dark.

 

[cannn]

Have you grown before?

I like to keep my ph swinging between 5.5 and 6.1 so that ph is fine. Id decrease your nute strength by half. I rarely use full strebgth for anything. Going half strebgth by what the bottle says is still prob too much for seedlings. I always go 1/4 strength or even less for seedlings. They really dont need much. Of that mills a and b stuff id give .75-1ml of each per gallon at this stage and see how they respond. Also how far away is that light? Theyre stretching a bit more than id like. Id keep a t5 very close. Like 6-10 inches from them. Ive never Used grodan cubes but that greening in the center of all of them like theyre growing algae looks concerning to me. Im sure someone with more experience will chime in soon enough..

 

[Terps]

I do not use any nutes until i have 2 sets of leaves showing then very little

 

[GardnerFunk]

Have you grown before?

I like to keep my ph swinging between 5.5 and 6.1 so that ph is fine. Id decrease your nute strength by half. I rarely use full strebgth for anything. Going half strebgth by what the bottle says is still prob too much for seedlings. I always go 1/4 strength or even less for seedlings. They really dont need much. Of that mills a and b stuff id give .75-1ml of each per gallon at this stage and see how they respond. Also how far away is that light? Theyre stretching a bit more than id like. Id keep a t5 very close. Like 6-10 inches from them. Ive never Used grodan cubes but that greening in the center of all of them like theyre growing algae looks concerning to me. Im sure someone with more experience will chime in soon enough..

I've unsuccessfully grown before.
I've just flushed them with 5.9 water. I have covered them so the algae dies. Thank you for the reply.

 

[GardnerFunk]

I do not use any nutes until i have 2 sets of leaves showing then very little

Thank you.

 

[Cold$moke]

Imo bump up the nutes
And test it with just one plant then wait a day.

They look hungry to me.
But just try it with 1 and do what your going to do with the others.

Just my opinion im not an expert
But remeber rockwool is totally inert and will not really buffer anything.

But its always best to work up your feed as others have said

 

[cannn]

Oh yeah whats your ventilation like?

 

[xtsho]

I've unsuccessfully grown before.
I've just flushed them with 5.9 water. I have covered them so the algae dies. Thank you for the reply.

You're starving those seedlings. You're not growing in soil. There is nothing in that rockwool.

 

[cannn]

You're starving those seedlings. You're not growing in soil. There is nothing in that rockwool.

Its true theres nothing in the rockwool. I agree they should be feeding but very light. I give my seedlings a very small amt of feed pretty much as soon as theyre up in dwc. I havent had it burn them. I start with 2 mls of floranova bloom in 4 gallons of water and by the time its matured its getting 1.5-2.0 mls per gallon. The npk ratio of floranova bloom is 4-8-7. With Equal parts of mills a and b you’re at 3-4-4. Id assume in dwc nutrients are more available so i considered maybe rockwool can take a slightly higher dose. .75-1ml of each part a and b per gallon would seem a place to start to me.. of course with the hydroguard.

 

[churchwhore]

im a new grower my plant is 30 days old and the leaves are starting to curl (taco) pretty sure its mites. so be prepared for it. if your gonna grow in coco you may wanna treat it for mites before you plant. its a mistake i made. hope this helps

 

[cannn]

im a new grower my plant is 30 days old and the leaves are starting to curl (taco) pretty sure its mites. so be prepared for it. if your gonna grow in coco you may wanna treat it for mites before you plant. its a mistake i made. hope this helps

Just cause you got mites doesnt mean everyone should be freaking out about them. Ive been growing for years and never had them once. I woulda wasted a lot of money treating a non issue if id done that. Never hurts to check for mites and such issues regularly and maybe even to have a solution on hand.

 

[churchwhore]

Just cause you got mites doesnt mean everyone should be freaking out about them. Ive been growing for years and never had them once. I woulda wasted a lot of money treating a non issue if id done that. Never hurts to check for mites and such issues regularly and maybe even to have a solution on hand.

 

[churchwhore]

thats what i was getting at, be prepared.

 

[Bunnybrew]

I would suggest you get into growing the soil way. Its much more forgiving. Especially at first when all u have to do is water for the first few weeks and by the time you need nutes your plant will be more hardy to whatever you decide to add

 

[churchwhore]

I would suggest you get into growing the soil way. Its much more forgiving. Especially at first when all u have to do is water for the first few weeks and by the time you need nutes your plant will be more hardy to whatever you decide to add

as new grower l agree, keep it simple

 

[cannn]

Theres some 1 part solutions for hydroponics (start to finish) that can make it amazingly simple and easy as long as you have water with a good stable ph. I personally had more trouble in soil overall, starting during flower, and was shocked at the ease and better quality of my first dwc grow.(for any soil grower about to get mad at the quality comment i do understand it was only due to the better health of my plant in hydro, but still.) What makes it easier for me is its easy to build up salts in soil and once you have a lockout its hard to flush out the salts. In dwc i can totally change the solution at any time if a plant doesnt like it. Its just hard to master bringing up seedlings, admitably i did have more ease at that in soil so im considering growing them in soil and taking clones for the hydro setup.. ive lost a couple seeds messing around. Just cause im sprouting in pure expanded clay and it seems to be hit or miss. But i wish id switched to hydro earlier personally.. Although i know many prefer soil. This is just what works for me

 

[GardnerFunk]

I flushed them with pH 6 water for a day last Saturday, then just little bits of pH 6 water all week and they look better...just a few remaining dying leaves from the original problem. I've not given them any nutes yet. So...some of the replies said I should be giving them low strength nutes now?
Yes, I prefer the forgiving nature of growing in soil, but I have an indoor grow room I don't want to do soil in. I grow outdoors too, with good success.


d they look a lot better.

 

[Cold$moke]

They look like thay are perking up and a little hungry.

Probly wouldn't hurt to give some 1/4 strength
Then 1/2 so on and so forth

 

[cannn]

I've not given them any nutes yet. So...some of the replies said I should be giving them low strength nutes now?

Its true theres nothing in the rockwool. I agree they should be feeding but very light. I give my seedlings a very small amt of feed pretty much as soon as theyre up in dwc. I havent had it burn them. I start with 2 mls of floranova bloom in 4 gallons of water and by the time its matured its getting 1.5-2.0 mls per gallon. The npk ratio of floranova bloom is 4-8-7. With Equal parts of mills a and b you’re at 3-4-4. Id assume in dwc nutrients are more available so i considered maybe rockwool can take a slightly higher dose. .75-1ml of each part a and b per gallon would seem a place to start to me.. of course with the hydroguard.

Very glad to hear theyre doing well! They are very light in color and also look a bit hungry to me. Just be very careful about the strength of the nutes. Less tends to be better than more. They can handle a decent range in the ec/ppm of the water, but once its too much it just starts rising and gets worse so its better to stay away from the high end of that range imo. Do you plan to setup a drip system or something on a timer or just gonna be hand watering these? Imo the best thing about the setup you have would be how automatable it is.