What did I do wrong, plz help

Hey all, so yesterday my plants were looking just fine and it was time to water them, so I watered them and today one of the has yellow at the end of leaves and another a couple leaves are curling down on one side of the leaf. Can you plz help me out with some ideas of why this is happening and how to fix it if I can? I’d truly appreciate it, thanks! Attached are some pics.

Looks like a ph swing ... what medium is that ?

Did you used tap water. If yes did you let it sit for 24h. And When you watered them did the leaf touche the ground and was it cool where you left your plant rest. Whst time of the day did you watered them?

And is that a heater next to here yiur plants are... Heater near planrs and watering at night can cause this also

Budzbuddha said:

Looks like a ph swing ... what medium is that ?

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I'm thinking it's a nute burn as they were fine then I watered em and next day look like this. I added nutes like a dumbass (damn newbies lol). It's Happy Frog mixed with 15% perlite

Frigault said:

Did you used tap water. If yes did you let it sit for 24h. And When you watered them did the leaf touche the ground and was it cool where you left your plant rest. Whst time of the day did you watered them?

Click to expand...

No tap water, I use distilled water and ph it at 6.5. I water them right where they at in the tray and no that's not a heater. I set it on an ac unit in my basement on the floor just to take a pic. I keep tent at 75-77* and 63-65% rh. I watered em an hour or 2 b4 lights cut off

If it is truly just Happy Frog ... it would have enough ammended Nutes in it to carry initial growth By Itself.
No extra Nutes needed.

You should be ready to transplant as root would have already hit bottom and probably began circling.
Skip the distilled ... use Tap . Distilled / RO water strips elements out.
Do you water your lawn with distilled water ? .... probably not.
Ph for happy frog ( prebuffered out of bag is 6.3 )
Target 6.5 ( as noted ).

There is no reason to “ feed “ a solo cup size container .... too easy to overfeeding such a small container. Hence letting the host soil do it instead.

I know and it was my mistake for sure. They've been growing so slow and being a newbie I thought some nutes would help...NOPE lol. After reading and researching it also shows signs of a root problem, but what do I know. I do think I'm gonna move em to 1gal pots tom as I was cutting some extra drainage holes in the bottom of the cups earlier and I seen something small and white fall and it happened twice (2 diff plants) and realized it was a piece of the root smdh. I didn't think at that size and only 10-11 days since breaking the surface that I would have roots like that at the bottom already. Will they be ok after doing that? Thanks bud (no pun intended)

Yes ... it’s fine . Just transplant into your container of choice ..... but do not saturate “ entire “ container after you transplant.
Just a little around the base stalk to help temper any shock. If you are still using Happy Frog as medium , add NOTHING .
Just water as needed. Let the plant acclimate to the medium and root out in unobstructed without dumping unnecessary extra feed it’s not ready for yet.

New growers screw up their initial plants by thinking the bagged soil “ isn’t enough “ ( at the start ) and over do the feed on a still very young plant.

Ahh.. I see nut burn. I did thought of checking this. Since in my head no nutes till cotyledon '' seed leaf starts turning. But yeah like budz mention. Transplant and it will be okay those leaf are the first to go. Sur the will affect growth a little but they bouce back quickly