Deforming leaves

In my aquafarm i have a 4 day old seedling thats started to go a bit odd, the leaves are jaggy and are curling up at the edges. Its only happening on new growth.
The res was changed on Sat evening.
P.H is around 5.7
Temps in grow room are 24*c
Res temps are 19
ppm is around 400
sorry for the bad quality pics i ohnly have my iphone at the moment.

I'm going to say low humidity bro. What's your RH?

Its never been bellow 50 in the veg room.

Too much heat. The same thing just happened to me. I removed my heater

Looks like a sign of stress, if not heat stress maybe nute stress from slight over fert. Maybe back of the nutes a bit. Is there much purpling on the leaf stems? The plant is looking good though, my leaves curl slightly at the edges too like this but i find it is from slightly high nutes. If not maybe missing a particular nute, time will definatly tell from this early stage, anyone else?

No purple on the stems, it could be heat stress as i'm under 1 600w MH and it was possibly a bit to close. I have moved it up a little and changed the res also gave it a little squirt of foliar feed. Lets see if that helps.

Just a little tip my friend. Only change one variable at a time, then you know what worked, if you catch my drift

Alright... first of all. im betting it has nothing to to with humidity... i've had seedling look narley curled up and be weard as hell. and then when i vegged it for alil longer then usual. it turned out to be the best smoke outta a few plants that looked perfect from the get go. so give it a chance just make sure you got the lights on 24 hrs a day for at least 2-4 wks depending on how fast your strain grows. Then induce the photo period. good luck to you my man.

Don't spray them with your lights on, you'll burn them. Could be heat stress, salt buildup, or VPD (just started researching that)

Right is definitely not heat stress, I have 4 other seedlings in farms all with there own 600w M/H and some bigger plants in soil in there to and they show no sings of heat stress, the temps are fine.
My RH has dropped a bit but again the rest of the plants are fine. The only thing I can really think of at this point is the nutes.
My local grow shop recommended some FHD 3 part grow micro bloom nutes apposed to Ionic, they gave me a free sample pack and this is the only thing that different from the rest of the farm seedlings.
So next res change i think im going to ditch the FHD in favor of the Ionic.
Also I have never personally had problems with foliar feeding with lights on.
Thanks for all your help folks. +rep for everyone that stopped by.

Try getting PH up to 5.9 and move the light away. I have seen this curl several times it's a combination of too much transpiration due to humidity and the light sucking water from the leaves too fast.

Whats a good P.H for an aquafarm? So far anything between 5.5 and 6.5 the plants seem to enjoy. Them being A.K 48 bubblegum and superbud.

CHUCKTYLAH said:

Try getting PH up to 5.9 and move the light away. I have seen this curl several times it's a combination of too much transpiration due to humidity and the light sucking water from the leaves too fast.

Click to expand...

VPD - Vapor Pressure Deficit

So after checking the calibration of my tri meeter turns out it was off by 1.6 so my PH was way off! Adjusted it to 5.8 gonna see what happens now.