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- #421
CrimsonBlitz
New Member
It definitely could be a nutrient burn, or low PH, or locked out nutrients, or root bound. It could be definitely one of those...Some slight humor there. It is more of an educated guess is how I look at it.
Like a Dr. rules out this and or that by doing test, etc., etc.
If you have only been feeding lightly... Uh oh! I do see some nutrient burnt tips.
-Maybe nutrient burn
Not necessarily. Your flushing salts out but other good stuff can get flushed out also. I think it is good to give a light feeding of 1/4 to 1/2 strength nutrients after a flush.
Good thought. Some strains will react differently to fertilizer strength.
I believe the hardest is PH adjustment. I feel most new growers don't even take it into consideration. Or, they just assume that if the PH is ok before application that the PH of the soil is good after application.
Even organic fertilizers suggest you flush at least once.
Liquid PH tester:
My bet is that it is low PH. Dark yellow is 6.5 (*can be yellow from fertilizer runoff*), orange is 5.0 or less. Red is 4.0 or less (if you are using a hydroponics liquid PH tester like I do)
Phosphorus deficiency can appear like a mold at times.
-Maybe a phosphorus deficiency (because you are in flower) cause by low PH? Maybe?
or
-Nutrient burn
Just my thoughts
Hi spimp, this is a really well thought out response. major props for taking the time to help out.
Heres what I know. Currently she's Nitrogen, Phosporus, and Magnesium deficient as well as fungus gnats. Previously, She had extremely low PH. There has been a nute burn in the past. There has also been heat stress in the past. Once my seed germinated, instead of transplanting into bigger pots I started her out in 2 gallon pots, my mistake for being lazy and trying to skip transplanting.
Heres what could be going on in addition to Nitrogen Phosphorus and Magnesium deficiency. PH could still be low - True PH Unknown no accurate way to measure it without clear water using my test kit, I'm waiting for my new PH test strips to come in. Root bound, possible but I dont think so and Nute burn, unsure but I dont think its this either.
Heres the kicker, if this is still ongoing nute burn in addition to having burnt leaf tips all over my grow why is this new problem which just appeared 48 hours ago only effecting 5 tiny bud leaves on 1 top out of 64 tops. Also the nute burn (burnt) the tips of all the leaves (dry and crispy) The new symptom still has all the plant moisture retained within the leaf itself but is discolored and did not start at the leaf tip. It is now spreading to a 6th leaf this time a small fan leaf, its a small dot effecting the side of the fan leaf. I'll get a picture but it may not show up. I also want to point out that all 5 of my plants are on the exact same feeding schedule with exactly the same strength nutes. Only these 2 plants are showing burns and symptoms, what is different is all the heavy flushing these 2 plants have been receiving lately to correct PH and nute burns.
My educated guess says deficiency, maybe phosphorus. but again I wonder... why only 5 small bud leaves and why does it look so different from other areas where burns and deficiencies are present? I would think this would start popping up everywhere if its a burn or deficiency.
The dark blue circle shows the new Symptom, I would like everyone to note the blue circled leaf tips are not burnt or brown in any way which leads me to rule out nute burn since the older brown leaf tips are not progressing further down the leaf after identifying it at least a week ago. the light blue circle shows where the symptomatic leaf used to be that I cut off. The Red circle shows the burnt leaf tips (this is old news). The Purple circle shows where this symptom is spreading to.
I guess if a few more people agree its a burn or deficiency I'll just assume its that as well and move on.
Now we can put that experience behind us and move on 
