help a brother out please!!!!

This is my first grow.I started my plants off in Scott's hyponex soil. My plants were showing signs of magnesium deficiency so I transplanted into better soil. (ocean Forrest) now the leaves appear to be burning. I tried flushing the soil sunday and again tonight. Looks like the burning has stopped progressing but now one of my plants seems to be drooping i'm guessing from being overwatered. Red pots are Master Kush. Yellow is NL. Two big ones are 3 weeks into veg. The smaller one is almost 2 weeks in. the Half and Half pic are the older two about a week and a half ago before any of the problems occured. Is there anything else I can do? Help please.i need advice badly. Don't wanna lose my girls bc i went through a lot just to get to this point and can't afford to start over bc of time. the ONLY bright side I can see is that even though they looked FUCKED, they have experienced a spike in growth since i changed soil

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let them dry out, then water with plane water till you see rapid growth then nute. if you dont have a ppm meter buy one if you do dont go over about 800 then work up slowly.

ffof is known to be hot. nutes arent needed in a lot of cases so i agree let it dry out really good then only water for a while and watch.

im definatly saying NO NUTES...they are not even close to big enuf for me to be adding nutes........water water water, until plant is at least 12" tall,,by then your plant should have a good root base to handle nutes.......i would be looking at your lite and how close or far away it is and how powerful...

Should add dolomite lime as an amendment to the OF soil, the ph of their soil can vary greatly bag 2 bag.

I haven't added any nutes. At this point I probably won't add any for veg. I'm only letting them veg about two more weeks.