Plant browing. Need help fast

This plant is 3 weeks old. It is growing very slow however its leaves' color was fine up to now, that they are turning very brown at the tip and expanding throughout the whole leaf. The first 2 pictures are of the plant I'm talking about, the 3rd picture shows one of my other plants which also has a problem (which might help identify what is going on).
-I use water with ph of 6-6.5, I water it once every 3 days.
-I havn't added any nutrients, however I just changed the plant to new soil 3 days ago (once it was already browning), so I don't think it's nutrient deficiency.
-Since my plants are outdoors could it maybe be an insect attack?

what kinda of soil were you using at first..and what kind of soil are you using now..how did you transplant them?

did you spray them with the light on? what kinda of lights are you using and how close are they

Quickee said:

did you spray them with the light on? what kinda of lights are you using and how close are they

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Dude, he said they are out door. Looks like a nute def to me, but they are too small

oh haha sorry i must have missed that..i tend to skip over things..makes it easier to read..must be why i recieved a B in history class ha

Quickee said:

oh haha sorry i must have missed that..i tend to skip over things..makes it easier to read..must be why i recieved a B in history class ha

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And why you arent very helpful wen ya post!

my leaves on my plants seem to have stated turning inward and on one plant 2/3 leaves have little light brown spots on them. when i tested my nuts level it was high so should i stop using nuts for now n just water till the level goes back down to medium. thank you for your advise in advance

Maybe you should try flushin em out?