Please help me save my babies!! Underfed / Overfed / waterlogged. Coco LED Canna

Groff

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Guys,

I prepped and prepped and prepped... but one single mistake is seriously compromising the health of my babies.

Here is the quick resume of whats happening. 2nd grow, 1st time from seed, coco, nutes, p/EC meters, LED. Canna Coco Pro+ and nutes

I cracked the seeds (photoperiod) and they sprouted like champs. I transplanted directly to 10L airpots. I thought formulex was general light feed for younglings, but apparently not. So I underfed until day 10. They stunted growth and started yellowing like this...




(this is when it just started, got significantly worse the next day!!)

So I realize I was starving them, and prepped a feed of Canna A&B, Rhizotonic, a little Cannazyme and a sprickle of Sensi Cal Mag Veg. Now, I also seriously underestimated how much coco holds water and how under LED there is much less evaporation, so all this time (I think) the medium has been too moist. So I prepared the feed at 1.6 (incl. base water EC of 0.5, so true EC 1.1) thinking to feed a strong dose with as much less water as possible without nute burn. Also did pH 5.5 as roots seem to like acidity under stress, and previous run-off was going at 6.0 6.2 (feeding 5.8)

Fed 250ml right on the stem zone on Sunday, and again yesterday. I think the medium is getting dry, but I cannot tell, its much harder to tell than soil/soiless. I compared to left over coco in the bag, but can't really tell as it feels quite moist to start with.

Today there is a significant improvement in the yellowing (in general), but now the first true leaves are looking really bad. Not crispy at all like typical nute burn, in fact the opposite, quite mushy. The tips look burnt in color (brownish), and all the leaves are quite droopy.

So I think that the nutrient feed is back on track, but the plants are :help: gasping for air.

Would you agree? Any input very welcome!

Sensi Purple Haze - has the most yellowing right now - damn it, the photo looks cool on the phone, but now I see it sucks! There is much yellowing starting from the veins going out on the newer leaves





Night Queen 1





Ortega Indica 1





Night Queen 2 - The heroin!! This girl is showing to be really tough! Strongest, healthiest, less yellowing, less droopiness, exactly same feed regime as the others.



But, still droopy



And the Ortega 2. Was ahead of the Purple Haze, but has since stunted the most as the one most behind.






So from now on I'm going for the "proper" feeding regime, Canna says EC 1.1 (excluding base water) so I reckon its best to aim at 0.8.

But my dilemma is, do they look waterlogged, or droopy for lack of water?

:thumbs:
 
Know nada about soil/soiless/coco growing Groff... But if your gonna get help.. This is the place you'll get it..

Good luck bro.. :wiz:
 
Damn it...

one ortega and one night queen are getting worse... The new leafs have gotten better and green, but whats with the first set dying out??





This one here started yellowing from the tip now too ...



I'm starting to think this may be iron deficiency. Canna A&B practically has nothing. Cal Mag Veg has quite a bit of chelated iron, should I try upping the feed here?
The coco is still a bit moist in the bottom, but not so much at the top, I would have expected the some improvement in vigor if it was water logging... but still all droopy have no clue what to do...

The other Ortega and Night queen are doing quite fine, except I don't see much growth. Maybe I'm being impatient and have read way too many DWC/Auto diaries.

Unless someone has a good idea, Iill wait until tomorrow and do a 1/2 strength feed + cal mag
 
Have u flushed her looks overfeed maybe wats your ph at ?
 
5.8 on the mark, except last feed I did 5.5 to induce a little acidity to help the roots combat eventual water logging.

I don't think it is overfeed. I mistakenly did only Formulex and Rhizotonic for the first 10 days, I only gave first real feed feed (Canna a&b, rhizo + cannazyme + very little cal mag) on day 11 at 1/2 strength, then the problems started.

They did stunt growth (height) as soon as I transplanted into to coco... Lights are 50cm above...
 
Looks like to much of one of them.I would flush her to be safe unless shes water logg this might make it worse. Did u start her in soil?
 
Canna b is floweing you shouldnt be giving them that yet
 
That looks exactly like pH lockout and/or nute burn. If you're putting 5.8 in and getting 6.2 out, it's a pH problem, your medium is probably in the 6.6-6.7 range.
 
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