Need Help! Leaves curl, turn yellow/brown/black

What is your soil pH?

whats da temp of da room?

Looks like maybe bacterial or fungal problem maybe even chemical poisoning. Use a good potting soil (you can run it through a pressure cooker on a rack contained in turkey bags to sterilize it first), new pots (washing them with dish detergent first), use only distilled water, and try again.

I flushed them. I'll check the pH tomorrow.

Temp never got over 72 and no lower than 62.

I started using this spray that is good to use on stuff we can eat.

When I took my last grow down (for other reason), the same stuff was just starting to take over my clones.

I used some soil from that last grow, that was only used for a couple days, one week tops.

Is there any way to save them? Should I just toss these and start a new batch?

Thanks for the info.

If you are saying that what happened to the mother plant is happening for the clones then it will be a genetical defect, try getting new seeds.

Originally Posted by potsy mcghee

If you are saying that what happened to the mother plant is happening for the clones then it will be a genetical defect, try getting new seeds.

No, I'm just saying this same stuff/thing starting happening right as a tossed my last batch. I used the same soil that was used for the clones I had in the last batch.

I didn't pay any attention to it last time because it was tossed before it got too bad.

But how can I get ride of it now and how can I prevent if from happening again or coming back?

Originally Posted by Kronic BackPain

Start date: Oct 25
Soil mix: 1/3 vermiculite, 1/3 pea pebble, 1/3 peat moss.

Used Miracle grow all purpose plant food at 1/8 to 1/4 the dose. Used just once so far.

Using CFLs.

Let me know if you guys need more info.

Leaves tips will curl, then it turns yellow. And it seems like over night the leave will turn black and dry up. Turns really brittle and falls apart when touched. This is only happening to the lower leaves. But when those dry up and die, it moves on to the next set of leaves.

What is causing this and how can a stop this and prevent it from happening again?

what is your total watts? if not looks like its a Miracle grow burn, i have seen alot of problems if that junk,. flush them and see if they live. they will not need nutes for a few weeks

Thos elittle ones are to small to dose with fert. Try to get a good soil and just lets them go on there own. Soil provides the nutrients in the begining. In soil your transplant and a good soil will provide nutrients for up to the first month.