Calcium Deficiency? Did I do this right?

heykevo

Member
Symptoms due to an ongoing problem take a while to show up on the plant, so if you're testing your runoff and it's regularly 1.1 higher than your inflow, you can correct the problem before any symptoms show itself on the plant and the plant will be happier.

But I'm guessing dude was asking you what your runoff numbers are because specifically you do currently have a problem that is expressing itself visually.
I’ll start testing runoff more next time. I’m hand watering atm and it’s with a wand so tbh I have no idea how much I’m watering, I’m just making sure I have a good amount of runoff. Gotta find me a good auto watering system.
 

twentyeight.threefive

Well-Known Member
Do these look like calcium deficiency?

Growing in coco, 3x3, 4 plants, elev8 megasonic, 300w LED light. I'm 24 days after the flip.

I messed up my nutrient batch by forgetting to adjust the PH. The EC was good, PH was 7.8. I fed the plants to 20% runoff and then realized oh crap. That night I adjusted the PH and let it settle and my brain said "go low" to offset the high, so I brought it down to 5.5 and fed again to around 50% runoff. After taking a moment to think about it I realize I should have just adjusted as normal and fed a good bit to run off the high PH, but mistakes were made.

The next night I open up the tent and this had started. I didn't notice it too much, wasn't terrible, and again dumb me forgot that my entire batch of nutrients was only 5.5ph, so I kept feeding from that same 5.5ph batch.

Three days later this is what I have and I realized that I'm an idiot.

So I went ahead and did a full flush 100% runoff with 6.5 ph plain water, let it sit for an hour. I mixed up a nutrient batch at 6.5. I'm reading that calcium upticks better at a higher PH. I'm going to bring that 6.5 down to 6.2 tonight, the 6.5 was just kinda for a recovery day. I doubled the cal-mag for this batch or 5mm per gallon instead of 2.5.

So I think I didn't really think it through initially and now I think I'm overthinking it.

Anyone have any insight on if I did this well or if I should have done / should do something differently?
It’s definitely not a calcium deficiency. Adding CalMag when it’s not needed it only going to make things worse. What exactly do you feed them?

You said they just started flower? 3 weeks in? Did you increase the light output or lower them or anything? What are the average temperature and RH in the tent?
 

Buddaboyo

Active Member
7.8 ph is not that wacky and it will definitely not affect your plants overnight.
Just go back to 7.0 and all is good.
Watch out for your N levels though especially in bloom where the N should/could be reduced anyway.
P is important now for bud development.
K can be increased a little now also, but P is very important in bloom.
Good luck and may the Ganja Gods smile upon your harvest :)
 
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