14 clones-yellow/crispy leaves

So I have 14 clones that were passed on to me and some of the lower leaves are drying up and turning yellow and some have crispy brown spots and im not sure what is causing the problem. A day after receiving them I transplanted into 16oz cups w/happy frog soil. I also watered them and fed them nutes yesterday, I have them under 12 daylight 75-100w cfl's lights 24/0.

Im new to growing and I need help identifying the problem and coming up with a solution since I am not exactly sure what is wrong. Also, would I be able to trim the bad part of the leaf off or cut the whole leaf off at the base of its stem or is it better to leave it on? Below are pictues I took of the problem areas feel free to comment, I need all the help and advice I can get.

Thanks , Vee

First of all...those clones are huge...so without a root system on those plants...they are struggling to transpire.

get a dome on those babies....they need humidity around 90% unless your are using a bubbler cloner type unit.

Drink!

Ya are they rooted?

It looks like a few of the leaves are dryed from heat, what are the temps.

do you have holes at the bottoem of the solo cups?

What is the ph and the ppm.ec ?

How old are they?

The clones were pretty large when they were given to me below is a pic of them 1 week ago when I got them, its been a week since I put them into the soil filled cups, which have small drain holes I cut out. I dont know how long to wait until I can transplant them into larger containers, what gal pot should I move up to?

I dont know much about the growing conditions before , but as of now the heat has been around 75-80*, the lightbulbs may also be too close to the plants if it looks like heat damage, how far should I keep them? And should I trim the dried leafs off? The humidity has been between 45-55%, I will work on raising the humidity with a dome or a dehumidifier. Water ph levels have been at around 6.5. I wish I knew how old the clones are, well thats the least of it...I rather know how to grow them properly and improve my growing conditions. - Thanks for the help, Vee.

I see some crisp in your leaves...it might be nute burn

Damn Sweetie - you did not notice your plants were having problem prior to them getting this bad....I feel bad, let me try and help.

Brown leaf edges that are indicative of heat stress. There's only one cure for this...get the heat away from the plants, either by moving the lamps or moving the plants.

There's a good chance that your plants were subjected to nutrient solution burn. These symptoms are seen when the EC concentration of hydroponic solutions or the soil is too high. These symptoms also appear when strong nutrient solution is splashed onto the leaves under hot HID lamps, causing the leaves to burn under the solution.

The high level of nutrients accumulates in the leaves and causes them to dry out and burn up. You must flush with clear, clean water immediately to allow the roots to recover, and prevent further damage. The find the cause of the high nutrient levels.

A better way would be to periodically feed the plants, once a week or as needed. Flush at least once a month.

Hopes that helps.

After looking at your clones they look fully rooted so you don't need a dome. As for the lights I would keep them a few inches off the clones. Your temps sound fine. So does the ph. so the other factor is the ec./ppm. this will include nuts. Do you have a ec meter? And I wound not cut the dead ones off, let them fall off.

Have you checked the grow faq.

I didn't realize they were already rooted. I thought they were fresh cuts. So forget about the dome.


I don't think it's too serious considering they have roots already. It doesn't look like nute burn, as it seesm to only be affecting the lower portions of the plants. Are you letting the cups dry out abit between waterings? It looks like a peat based mix...so keeping them wet is not good.

Try a 1/4 strength feeding of a nute with all 3 NPK's covered like a veg nute. Get some epsom salts and dissolve 1 tsp in a gallon of water. Pre-dissolving the epsom in a bit of warm water first helps. If you don't have any epsom...give the feed 1 tbs/G of molasses. I think you might have a mg lockout.

Drink!

in that pic of them when you got them, are they in rockwool??? if so were they on a drip system before or some other hydro set up??? maybe that could be part of the problem if they were, going from hydro to soil. and then not getting its regular feedings??? idk i could be wrong just my guess