Hydroponics - leafs curling early veg

[Beowuuulf]

79f , 70% RH drops to 50 somewhat rarely when the 5L humidity runs out before I can can refill it, 200 PPFD for 18 hours, at 800 ppm co2. Res 68f consistent and 400ppm with 6.0 PH

Leafs appear curling, but unclear if they are naturally curling towards the reflective bubble foil, which could make sense if it could recieve more light from that direction.. or is it stress of some kind? I'm assuming the plant has near maximum of anything it needs and the light it pretty weak ..

Any thoughts?

 

[jguit]

What are you feeding it and why at pH 6? Also, why bother with CO2 at this point? RH should be around 60%.

That plant is tiny. Maybe lower the light intensity even more.

 

[Beowuuulf]

What are you feeding it and why at pH 6? Also, why bother with CO2 at this point? RH should be around 60%.

That plant is tiny. Maybe lower the light intensity even more.

Thanks for checking on my post,

The c02 is just Normal house reading ambient level
I'm feeding a blend of Remo: grow, micro, kelp, MagNifiCal about 80ml each for large res to equal 400ppm(150 tap plus 250 nutrient) and the 6.0 just standard PH I reckon

 

[jguit]

I'm assuming you're doing some kind of RDWC grow? I'll let someone who grows that in that style answer but your pH should be lower, more in the 5.8 range.

I'd try lowering your light intensity and getting your RH to 60% for starters. I'm not familiar with the Remo line of nutrients. Are you following their grow schedule?

I'd also not bother with CO2 at this point.

 

[jguit]

Perhaps even raise you ambient temps to around 83F as well.

 

[Beowuuulf]

@jguit Thanks, I'll try that and raise the lights --seems I've burnt them a bit, I think. More pics:

 

[jguit]

The droopy, turned up edges on the leaves suggest something environmental, either a VPD (RH/Temp) or light issue.

How are your roots looking?

 

[Beowuuulf]

See roots:

Spoiler

Spoiler

I think I need to see some new growth with the new parameters, and perhaps I'm seeing old growth and consequence from before when there was no nutrient and 7ph, (water set recently, 3 days ago) and I didn't have consistent automated RH during first leafs sprout

 

[Beowuuulf]

Roots are starting to develop bacteria I think .. possibly due to not sterilizing one of the air stones from last grow .. I thought the 68f water temp would hold off any virus

 

[Beowuuulf]

3-19-22

Notice the lucky 4 leaf node? Or perhaps unlucky since that's not a fibbonacci number

Disregard the thermometer and RH in vid it's off by 10%, I use an inkbird RH sensor to keep always 65 RH

Looks like root rot on the upper part of roots, the res is always 65c and plenty of airstones.

Edit: posted in wrong thread