Nitrogen toxicity? Any input would help!

Hy guys! So i have these two purple urkles in FFOF . Even though ive grown for a few years now, Its my first grow in fox farm ocean forest and honestly my first grow in soil instead of coco. These two plants looked absolitely perfect a week ago. I watered them, 6.0pH dechlored tap water at around 100 ppm. My tap comes out on the harder side. But i didnt have any problems in the seedling/very begining of veg. I did add BC clean kelp and some fish shit too the last wateringbut other than that nothing has changed. Theyre under a marshydro fc-e3000 with 20 other healthy clones of a different strain(in coco and on a different feed schedule obviously) While possible, i really dont think its overwatering as i havent watered either of the suffering plants to runoff yet and really only fed every few days when the tops were dry. Is this a nitrogen toxicity? Ive heard thats common with ffof. Top healthy almost toooo healthy darker green but then these bottom fan leaves dieing off and curling up. I notices also the top fans are clawing. Any input would be awesome and happy growin yall!!

It's got a touch of too much N, but I doubt it's from the FFOF, more likely from the kelp and fish. It's not bad, looks like it got a blast of nutes a while ago, but it will be fine.

Phytoplankton said:

It's got a touch of too much N, but I doubt it's from the FFOF, more likely from the kelp and fish. It's not bad, looks like it got a blast of nutes a while ago, but it will be fine.

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Exactly where my heads is at. Just gave then a nice flush today anyways just to be safe. They hopefully wont need any real nute nutes for atleast a month. Hopefully right before i flip to flower ill get them hooked right with their bottled nutes. Ive had pretty good success jumping from amended medium to switching to bottles right before flowering. With this specific strain too so hopefully shell be alright! Thanks for the input!

c3_Genetics said:

Exactly where my heads is at. Just gave then a nice flush today anyways just to be safe. They hopefully wont need any real nute nutes for atleast a month. Hopefully right before i flip to flower ill get them hooked right with their bottled nutes. Ive had pretty good success jumping from amended medium to switching to bottles right before flowering. With this specific strain too so hopefully shell be alright! Thanks for the input!

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probably need nutes before a month, you just flushed a lot of the nutrient out of the FFOF.

Phytoplankton said:

probably need nutes before a month, you just flushed a lot of the nutrient out of the FFOF.

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Was kinda thinkin thw same thing, but for a different reason. I just thought it maybe wasnt an older bag of soil or just wasnt very "hot". Didnt even think about the flush. Again my first time ffof and really soil at all. Does a flush on preamended or prepacked soil really wash out alot of nutrients even when im not using any salts yet!? I didnt know that! Thanks you for the reply! So the day after the flush, the claw went away and everything really perked back up. Then two days later now im seeing all the new growth
very light green almost like a lime(ish) green and the fan leaves are just all a nice solid green. What could that be? And should i start a very very mild feed of nutes now ya think? Ps. Check out the one weird leaf color mutation. Just down the side of one leaf theres like a lime green racing stripe haha.

Cant see the best in these pics but the difference in greens between the fan leaves and new growth is very significant.

Also sorry i forot to mention this is only with the older bigger plant in the ffof. The younger smalled plant in the same ffof from the same bag got the same flush and is doing fine other than what looks like maybe a bit of tacoing but it was the plant closet to the fan so i moved it over and she seems to be doing great