What the $@!T IS this from!

I've tried different soil, better water, different nutes, no nutes, clones, seeds, gnats, no gnats. But after growing awhile, especially in flower the leaves get trashed! Only thing I haven't tried is PH. But with no nutes.... And my water is about 7.

could be overwatering. how often you watering?

Thx for the reply, don't think it's that, i water when it's dry and pot is light. The leaves get crispy and seems to fit phosphorus deficiency for most part, as well as others sometimes like mag or potash, even N.

Starts w older fan leaves and moves up while. A disease I've got? Maybe I do needa adjust ph, just always of the school that soil will buffer it and it's hard to change SOIL ph. What meter should I get W O breaking my broke bank

nitrogen starts at the bottom and goes up, seems like a variety of diffecincies(prolly misspelled) due to the inability to take nutrients up from your ph being off.. you need a ph tester.. test the runoff from the pots. i think soil likes 6.8.. Maybe do that and flush at the same time.. let it dry good and ease back into a normal feeding schedule. maybe flush after every feeding until you get it heathly again.

What types of soil have you tried?

The soil(s) could be hot with nutrients already.

KuLong said:

What types of soil have you tried?

The soil(s) could be hot with nutrients already.

Click to expand...

good info +rep .. miracle grow organic with compost i think.. the compost will feed for a month anyway right? im a hydro guy.

Supersoil, promix, now im on fox farms OF. Started mixing it with 1/3 FF light W now. Nutes tend to make it worse, but it happens either way. Recently it really looked like P deficiency so I gave guano and they turned around, for a while. Yesterday I gave s light feed w little of everything in it. Good molasses, little high P guano, and a micro nute mix that has K and some N

It really looks like a Ph issue. You could try distilled white vinegar to bring the ph down or dolomite lime.

The photos you have provided, show a plant with the beginnings of a Calcium issue. The rust colored spots are the first clue. You also have some leaves with signs of narcosis that appear to indicate a phosphorous issue. A PH in soil of less than 6 will lock out Phosphorous. I'd verify PH before adding any nutes.

Thank u for looking. Gonna research ph adjusting I guess. Any tips?

I could be off but it actually looks like Serapis is right it's lockout not a def make sure you know the difference
lockout will cause a deficiency but thats because the soil is to rich. happens at a accelerated rate, also happens when your ph goes unstable.
a deficiency i.e phosphorous the plant hits flower phosphorous goes up taking more out the soil if not replaced at the same rate it is absorbed of close to it will begin to gain a phosphorous deficiency

i just found this online earlier today
http://weedfarmer.com/cannabis/tables_guide.php

Test your runoffs ph and ppm/ec. That'll tell you most everything you need to know to diagnose those issues. If you don't have the tools to measure you can start doing some good old fashioned side by sides and see what they respond to.

If you don't mind, take a closer pic of a single fan leaf that's showing signs. How's the rest of the plant doing? root system look good? growth rate ok?

edit: what kind of water are you using right now? tap?

just had same kinda problem with both veg and flower plants. Looks very similar. my set up=FFOF and Humboldt Natural Nutes,1000watt, 3 gallon pots. Had trouble diagnosing. pH was normal(soil and nutes). Finally switched nute to BIO-Bizz grow and bloom. Problem went bye-bye. I have heard rumors of problems with FFOF. They are now making FFOF in Missouri as well as Arcata,CA. That means differnt sources for dirt and such. Problems reportedly with Missouri FFOF is poor H2o holding capacity, which means hungry plants and lots of under fertilization goin on = lots of misdiagnosis = more problems. Keep in mind this is hear-say from growshop.
Had probs. with fungus gnats once. Symptoms were very similar, not from the flying ones BUT from their larva in soil. They feed on tender roots which in turn showed in leaf damage thru whole plant. When feeding/watering-you can see them in runoff water. Tiny little moving root eating maggots.

Try magnesium and potassium. You would be surprised how many people overlook potassium. K flushes fast in soil. If your stems are purple, k is your problem. You want green stems, despite the myth of purple stems.

Phos def is what i was going to say.

Bh.

I agree on ph, looks like lockout too

Maximus cannabis said:

I agree on ph, looks like lockout too

Click to expand...

I agree.. + rep for good info.