Why are my water leaves dying?

[Fez21]

I can’t figure out why my water leaves are dying. Does this look like a potassium deficiency?

info on the grow

Fox farm ocean forest and happy frog with extra homemade compost added
3 gallon containers
No salt nutes only down to earth dry amendments
600 watt LED lights
I have lightly top dressed at day 1 and day 35 of flower. I used seabird guano, 2-8-4 fertilizer, bone meal, and a small amount of bio-live. I use aerated compost teas occasionally - maybe once every 2 weeks.
I use rainwater that is collected from a tin roof into a 55 gallon drum


when I moved these plants into the flowering room, they were absolutely gorgeous. They were very healthy and very luscious. After about 3 weeks in flower, I noticed the margins starting to yellow and the tips starting to curl and turn brown. Eventually, all the water leaves look crumbly and seem like they’re dying fast!

It looks like a potassium deficiency to me?? But I don’t understand how because I haven’t used any salt nutrients.

can water that’s left sitting outside for a few days drfift in ph?

is that the only way potassium could be locked out if I haven’t used any salt nutrients?

Any help would be appreciated!

 

[Fez21]

I’ve added more pics. And I need to clarify my statement up above because I didn’t articulate it very well.

From what I’ve read, potassium deficiencies happen from either a nutrient lockout or ph problem. Nutrient lockouts often happen from salt nutrients. I meant is it possible to have a nutrient lockout when I haven’t used any salt nutrients?

and then the second part of the question was maybe the deficient is happening from a ph problem which is why I asked the question can ph drift if the water sits in an open topped tank.

 

[sallygram]

Does it say 95 degrees in the room? I am not a compost guy but it seems like you are doing everything right there and usually it is a Ph issue, I honestly don't think you could have too much of a ph difference so I am wondering if maybe the room is getting even hotter and maybe the plants are just getting too damn hot. I am definitely not an expert on your type of grow but hopefully it helps

high temps can cause root rot so you may want to take a look at your roots

 

[Fez21]

No! It’s 79.5 but the string from the ratchets covers the 7. To be totally honest, I try to do a solid job of keeping the room in good parameters. It’s very well insulated and kept about 78-80 degrees during the day and about 72-75 at night. My humidity never gets above 60 which is usually about where I run it. In the photo the humidity is at 50 I believe.

 

[sallygram]

Well that was the only thing that I thought was glaring. Like i said I am no soil expert. But it all sounds okay to me so I hope someone responds with some insight. The only time that I have ever had die off like that was either a ph issue or spidermites. Sorry i am no help good luck

 

[sallygram]

Well that was the only thing that I thought was glaring. Like i said I am no soil expert. But it all sounds okay to me so I hope someone responds with some insight. The only time that I have ever had die off like that was either a ph issue or spidermites. Sorry i am no help good luck

 

[HaroldRocks]

i call shitty fox farms

 

[Fez21]

Well that was the only thing that I thought was glaring. Like i said I am no soil expert. But it all sounds okay to me so I hope someone responds with some insight. The only time that I have ever had die off like that was either a ph issue or spidermites. Sorry i am no help good luck

Well that was the only thing that I thought was glaring. Like i said I am no soil expert. But it all sounds okay to me so I hope someone responds with some insight. The only time that I have ever had die off like that was either a ph issue or spidermites. Sorry i am no help good luck

Thanks anyways! I appreciate the feedback for sure!! I think it’s a pH issue but I have no idea.

 

[calvin.m16]

PH Hell shout out to Fox Farms! Fox Farms is trash quality. I tried their 70/30 coco and it was full of rust chunks from the machine they mix it in lmfao "cleanest coco" $9/bag? doubtful. Oh also digging through a bag of Fox Farms Ocean Forest I got fish hooked by a literal fish hook in the blend. I'll pass..

i call shitty fox farms