What is going on with my plants? change after flush

[UserName]

Im using foxfarm nutes for an unintended photo grow after my autos dident pop. Week 4 is a flush with their product called sledgehammer flush. the day after doing this some leaves started to curl and change color, and other new growth turned to a lighter green than my large fan leaves are.

The big plant is a powerflower from royal queen, the others are 2 mango kush and the smallest one is an unknown. they just went from 18/6 with MH to 12/12 with HPS under 400w light in a 4x4 tent.

what is going on? how do i correct it?

 

[namvet25]

Are you feeding veg nutes?Looks like a little nute burn.

 

[UserName]

Are you feeding veg nutes?Looks like a little nute burn.

im feeding the full line of fox farm nutes, as per their feeding schedule for soil.

http://foxfarmfertilizer.com/index.php/frontpage/feeding-schedules.html

if it is indeed burn, would a plain water flush help, or do i just let them fix themselves?

 

[Waira]

:smoke: Hi Username- Sledgehammer is for purging the soil of bound-up nutrients, usually used to do final cleansing of the soil before harvest, or as a rinse agent for when there's been overfertilizing; The bigger plant looks fine; Hmmm, this happened within a day or so after application, huh? It's the speed at which it happened that bothers me,... Well, with early symptoms like this, it could be a sign of either nute' defc., or ironically, minor burn, ...and worse, both are possible in this situation! Either the Hammer stripped the soil of borderline low nutes (likely Mg, since it's showing on lower leaves; Mg is mobile), and the plant is now having to try and scavenge from older growth...or, because the plants aren't big enough to eat up all that you've been feeding them, even at the rec. dosage, it's been building up, the soil temporarily binding some of it up (like it's suppose to), then the Hammer knocks it loose with a sudden rush of extra stuff,... A little more info and further symptoms will help hint at which,... you said the new growth looks paler? Do you see twisting, clawing or dead spots? -these would suggest burn... Any other symptoms? Pics of new growth will help a lot,... if there's nothing else but color loss visible, and symptoms progress on the lower leaves, (again, fresh pics), it's likely a defc. issue; easily fixed with Ca-Mg supplement, or molasses,... maybe some weak nutes, a blend of veg/bloom, after we figure out if this is the case,... Let us know what you see as far as progression of symptoms, and fresh pics too all around, please...:tiphat:

 

[UserName]

:smoke: Hi Username- Sledgehammer is for purging the soil of bound-up nutrients, usually used to do final cleansing of the soil before harvest, or as a rinse agent for when there's been overfertilizing; The bigger plant looks fine; Hmmm, this happened within a day or so after application, huh? It's the speed at which it happened that bothers me,... Well, with early symptoms like this, it could be a sign of either nute' defc., or ironically, minor burn, ...and worse, both are possible in this situation! Either the Hammer stripped the soil of borderline low nutes (likely Mg, since it's showing on lower leaves; Mg is mobile), and the plant is now having to try and scavenge from older growth...or, because the plants aren't big enough to eat up all that you've been feeding them, even at the rec. dosage, it's been building up, the soil temporarily binding some of it up (like it's suppose to), then the Hammer knocks it loose with a sudden rush of extra stuff,... A little more info and further symptoms will help hint at which,... you said the new growth looks paler? Do you see twisting, clawing or dead spots? -these would suggest burn... Any other symptoms? Pics of new growth will help a lot,... if there's nothing else but color loss visible, and symptoms progress on the lower leaves, (again, fresh pics), it's likely a defc. issue; easily fixed with Ca-Mg supplement, or molasses,... maybe some weak nutes, a blend of veg/bloom, after we figure out if this is the case,... Let us know what you see as far as progression of symptoms, and fresh pics too all around, please...:tiphat:

Since this is a photo, and nutes aren't that concentrated

lets see if i can give some more info that you need here...

on the larger plant, my new growth seems much lighter than normal since the flush, and a few of the tips are slightly browned. the medium plant is the one with the light green patches in the leaves. the smallest plant has some brown tips, and some leaves are curling down, as well as up and twisting. It does not appear to be getting worse, but also no better either.

here are pics taken just now...

 

[Waira]

...OK! Thanks for the good pics bro', but, in the future try to get them under natural/regular lighting, as the color of the HPS really interferes with the reading of color changes on the leaf, and washes out brown colors, which both are critical to diagnosis,... What you took pics of is perfect! So, looking at your newest growth, I don't see the distortion or fried tissues associated with nute' burn (comment about a few brown tips noted), and it would have for sure shown up here by now if it was going to,.. a few older leaves 3-4 nodes down have some clawing/down curling, but that's not relevant today,... markings in pic 6 from top left look odd, likely physical damage? The rest look like Mg defc, and the lightening of color on new growth could be the start of Fe defc., maybe S (they look a lot alike early on!)... So, mix up a 1/2 strength blend of veg and bloom nute's, an even -ish N-P-K number, to cover the bases, and also some sort of dedicated Ca-Mg supp', or epsom salts (MgSO4) at about 1T/gal for soil, and/or 1 tsp/gal foliar spray .... have you done foliar spraying before? ...this is a vital skill to have experience with, very very handy! Foliar route is the fastest way into the plant, and it bypasses the roots/soil, in case the are issues there,... with this technique it's strongly recommended that you use a water spreader, or wetting agent mixed into your soln.; this stuff takes the surface tension out of the spray soln., making it coat evenly over the surface of the leaves, instead of beading up; basically, the more surface area that get covered (top and bottom!), the more gets absorbed! Even a drop or two of mild detergent will do in a pinch, since there are no buds yet,... meantime, keep watching for any progression of symptoms! :thumbs:

 

[UserName]

thankfully, some of the leaves seem to be bouncing back today and not curled down as they were last night. im still going to go with a half dose of nutes right now and see if it helps finish picking my girls back up.

i have been foliar spraying flowerskiss from foxfarm 2x per week as well. im hoping it was just a bad reaction to the flush, or it stirred up some stuff and mildly burned them. guess we'll see .....