Is this nutrient burn or some sort of deficiency? (photo included)

I was accidentally feeding 15 ML bio-bloom for a few weeks instead of the needed 5..... i know that bio-bloom is not very hot but i am sure i have some burning but is this burning? i have been watering straight water for the past couple weeks. I have honestly no idea what this could be.. Any ideas?

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Ummmm dont use straight water in a situation like that, when you over feed.
FLUSH your plants. Start Fresh!
Then assess your situation from there! Your plants need to be fed or they will find a means to feed on themselves.

If you dont know how to flush, im sure you know how to use google!
Good luck!

The reason i did not do a complete flush is because i am still not sure if it was indeed a nutrient burn situation.

If the leaf is curling down its a def, if their curling up its the burn.

What if the leaf is not curling at all? Just turning brown in spots on all of the leaves. I don't think it could be a magnesium def?

The best way to get support for plant issues is to give as much detail as you can. Strain, lights, feed, air, temps, age, vegging or budding, etc.

Pardon me if I jump into this, but my sitch is similar. Please take a look at these pics. These are outdoor plants, I'm using organic ferts, it's been cold and grey here so I'm careful about flushing too much as the pots don't dry out. Afraid of root rot. -- I'm not an total newbie, but this is the first time I'm seeing this problem. I've had leaves curl before, it was one of the minerals, I solved that problem, but this one isn't being solved. I flushed the plants, added a bit less nutrients and they are still looking a tad weary. What does this look like to you all? Also, the pots they are in are 11 liters. The guy at the store told me these were large enough. Now I'm wondering if the roots are screaming to be released.

Those look kinda just like the plants genetics, i am currently working with a blueberry cross and it displays a crinkly leaf genetic due to the amount of times it was crossed. Is that a super hybrid?

Of the four plants, I only know one of them is Dutch Cheese (caint remember sheeyut). All of them are sativa/indica mixes so that sounds kinda hybriddy to me. -- Oh, the agonies. I did a sort of half-hearted flush the other day because I wasn*t sure that I'd over-fertilized them. I read that organic fertilizers can't damage your plants. I'm using simple-bimple Plagron Terra Grow and Alga Grow from Amsterdam. I haven't figured out what the diff is really.

Anyway, after the half-hearted flush, I made really sure that the pH was looking at least direction 6.5 -- I'm so confused with the flood of info. One person says make it 7 another says 6. So I just pray and aim at a little above 6.

Now, my plants are in these 11 liter pots and I*ve read that they don't like their roots to be crowded. Then someone here told me that it depends on the plant. Sounds logical, but it's all starting to sound like I need a college education in botany. But it's okay, I'm not worrying about it. Enjoying seeing those rascals jest a growin.

And to add, I measure the ferts exactly and I don't go over what they specify except when the leaves start looking yellowish, then I dump a bit more in. -- I've been careful because it has been grey and rainy and cold here. Great atmosphere for the plants NOT. The soil doesn't dry out, but I've been poking holes with a thin stick to get air to the roots. Fussy mommy here. On the cheese one, I felt adventurous and decided to experiment. I have some tomatoe and veggie ferts in pellet form and I thought I'd just fiddle around and see if it does just as well with that. Gotta check the pH today, IF it stays sunny long enough for the soil to finally dry out. That sorta thing gets me edgy.