Sick Girls in bloom :(

[EPDMGUY]

Plant is Sour Livers by Mephisto and all three of my plants seem to have what looks like the burnt tips but in only one of my Sour Livers does it seems to be getting worse and spreading deeper into my leaves. I thought maybe Calmag because it has spots but I really don’t think so because I am Feeding them 5ml/gallon but honestly I don’t know.

Feed:
Mega Crop 1/4Tsp/Gallon
Bud Explosion 1/2Tsp/3 Gallons
Sweet Candy 1/4Tsp/gallon
Botanicare Calmag

Started feeding Nutes every other watering besides Calmag because I thought the burnt tips were Nitrogen Toxicity but honestly not so sure anymore because the problem is now getting worse.

Tent:
76F
55%RH
Mars Sp-150 QB’s

They are in full blown bloom but need a bit more time not trying to screw up my yeild and hope I can figure out what the heck is happening. Thanks guys for the help

 

[Jackson]

Are you checking ph after mixing solutions? One of the most common mistakes is not checking. Just my opinion

 

[EPDMGUY]

Shit yeah I forgot to add I’m growing in ProMix BX soil As per to their standards 5.5-6.2 ph range I mix everything at 5.8-6.0.

 

[Animatey]

Looks like overfeeding to me. Burnt tips will kind of continue for a while even after you lower the feed.

In hydro, I've learned not to drop the feed too drastically after an overfeed. I'm not sure about soil, but you'll probably see residual burn for a little while, but that doesn't necessarily mean they are still overfed.

Plants look fine to me though, not a huge issue.

Hopefully someone experienced in soil can recommend a method of dialing it back without overcompensating.

 

[Animatey]

Also those plants do not look like they have too much nitrogen. Too much N and they get really dark green. Must be another nute in my opinion.

 

[EPDMGUY]

i wonder if it couldn’t be from the Bud Explosion. This is all new to me.

 

[The Bedroom Gardener UK]

Also those plants do not look like they have too much nitrogen. Too much N and they get really dark green. Must be another nute in my opinion.

I'm with this. Nute burn, but not N.

 

[Arthur]

I'm guessing you've got an in pot pH issue. Symptom looks like burn, but could be P deficiency... it hides well, initially dark green leaves, then usually starts at the tips and runs down the margins working inward.

This is the chart I use when running soil.

 

[EPDMGUY]

Feel like I should have stayed with the basics and not messing with the bud explosion and just simply using MegaCrop throughout.

@Arthur when I started these plants off I was using those PH ranges and a fellow grower pointed out that promix should be treated like using coco and hydro ranges of 5.5-6.2, so I did a little research and the guys over at promix do recommend 5.5-6.2. Also reading a little more and people are saying that there mix has gone down on quality control as cannabis becomes legal in more states and that some guys are reporting soil mixes right out of the bale are testing in the low 4’s to high 3’s. Also reading a bunch of talk people are running all sorts of different PH’s to there feed using promix. Prolly be switching to biobizz after this grow, I haven’t had the upmost confidence in this soil from the beginning and me being a noob don’t really even know what the soil ph should be or how to adjust it if it is off.

 

[Arthur]

Finding your style will be the hardest part of being a grower. Many styles work well, even while we growers argue which is best. The answer is what works best for you. You could duplicate my setup exactly, but your not here, a strain that grows bonkers for me might give you fits there, just due to environmental conditions.

When I originally posted to the thread, I went to the promix website, I believe the idea is that the medium is supposed to be pHing 7 out of the bag, low pH feeds put that around 6.5 averaged in the root zone.
But if the pH has slid down, or was always low, and then your feeding low...

Even with brands I trust, bags are tested for pH prior to starting seeds. Lost seeds and wasted time get on my nerves.