Any thoughts?

i run ghe tuff looks like you got the ratios wrong bro when i ran this style i ran 4-5-10 4 being the calmag id bet you got a calmag def and a N as well when i ran this lucas style to try it i starting at 2-4-8 then 4-5-10 then 4-8-16 first number being the calmag hope this helps bro if you got new growth coming in id up your calmag a lil and the micro good luck bro

Hello With what you're feeding there shouldn't be this level of damage. And the 2 possible different deficiencies. So id put it down to ph problems. If you're growing hydro that low ph could possibly work but if you're soil growing it really needs to come up to 6.5. If you're still having problems then I'd recalibrate the ph meter in case its off. Come through with a heavy watering of 6.5 water and then add a low dose of the nutrients. Happy growing. ✌️

you probably have a N deficiency... the plant still needs normal amounts of N in bloom. (check out my links on my profile - the Dr. Bruce Bugbee/apogee intruments stuff specifically) How long have you given 0-N? consider this before acting on what i say in this regard. i'd stick to full tap. It contains Ca/Fe/Cl (more?) that your nutes system of products may expect to exist. unless you rtap is >300ppm, i wouldn't worry about using 100% tap to mix. You also have something else going on. Ca def? but if you've been feeding proper ppm of Ca it's likely there but being locked out. Again, need to consider recent behaviour. when things look confusing, i assume it's an overabundance.. If i were going to vegas, that'd be the good bet. Based on what i read -- i'd go a irrigation with just some N, followed by a couple irrigation in coming days with water-only... then provide a more balanced diet going forward. I have a nute spreadsheet linked in my profile too -- google drive, no macros, no funny business -- *** never open up a spreadsheet with a "macro" from an unknown source, if not aware. You cn preview it first with google too. Only formulas in cells. Anyway, can help you deduce problems or eliminate possibilities by confirmng there is an abundance of "this" or "that"

When the plant starts doing this It seems to always have to do with over watering or the ph which messes with the plant intake of nutrients over watering can cause a lockout. I like to keep mine around 6.2 seems to be optimal for most strains. Hopefully this was helpful and remember Happy Growing and Free your mind one puff at a time. Mr_Weeds_Autos.

ph 6.2 up yr ppm by 100 leaves should be darker at wk 4-5 6-7overdrive 8- flush