Noob, am I looking at nute burn?

I've had these 4 days now and it's been a shaky start. The move when I got them and I had a stoner moment and had them under a hps for a couple days before switching over to a proper mh(400w). I'm told they're in foxfarm ocen forest soil, I'm using foxfarm grow big/big bloom/open sesame per the foxfarm soil grow guide(I'm on week 4), I use distilled water with 1 tsp/gallon of calmag. Today I fed them and took the following measurements from the run off: ph between 6.1 and 6.5 and ppm between 215 and 220. Actual soil ppm I am unsure of because I don't have a meter for soil. Temps stay between 75-80 and humidity is a little low at 44%. I've searched this board and the internet and it looks like nute burn, should I continue with the foxfarm schedule and water the next 2 days and flush and then use half strength nutes from there or flush asap? This is my very first grow, it's blueberry/trainwreck from clone.

Root bound I would guess. I cannot see the leaves in enough detail to make a good determination but those plants are very tall and those pots are not big enough for them. Transplant them immediately.

Some closer pics if the leaves would help. I do have to agree though. Those look like Christmas trees in 2 gallon pots. You do wanna transplant ASAP for sure.

I added a bottle in the picture to give a size comparison

Looks like nute burn because all plants look the same. back off of it for a few dayz then go back with lighter amount. And transplant to a bigger pot if you can.

I'd put them in ffof and quit the nutes until they have a chance to use whats in the soil. The feeding chart will lead you to burn them. Relax. They won't die if you don't pour money (nutes) in the pot with the water. Being that size I would think Your going to switch to 12/12 soon. If so a 3 or 4 gallon will probably be all the roots have a chance to reach in to. I think they look fine. If they are root bound Uncle Ben recomends taking a clean razor blade and cutting the root ball down the sides like a pie. Not too deep. The cut will start the roots growing out otherwise they're bound up and that can cause problems. Also a catch tray to hold runoff til you can discard it.

Sounds like a trip to my local hydro store is in order. I got the feeling from the numerous posts I've seen that the foxfarm chart is a recipe for mistakes. I do plan on switching to 12/12 in a few days.

I use Fox Farm Nutes,
the Schedule is more a guide than a rule book.
I would say that's true of all Nutes.

You will want to give them some time to stretch out those roots before the flip.

I plan on picking up some more soil and bigger buckets today and transplanting them when I get home, how long should I let them settle in the new pots before flipping the lights?

Considering the height and the coming stretch after flipping I'd say 5 days or so. Keep updating I'd like to see how they turn out. I'm a noob too, just trying to help with what I can. So do lots of research. I found the best way to search is on google or bing (whatever) the search engine on riu isn't that great.

I'll update here for the current problem, but I went ahead and started a journal as well to follow the grow completely

https://www.rollitup.org/grow-journals/739973-very-first-grow-blueberry-trainwreck.html

Give them about a week

Transplant, her shoe is to tight.

I finally got my plants potted in to larger 3 gallon pots, I've left the nutes alone and have only been giving them water.