Plant is dying Whats Wrong? **PICS**

Hey guys I have a plant thats really droopy. It was my one plant that I kept under 6500k light primarily. When I transplanted it yesterday, the roots were all root bound at the bottom, but then again all my other plants were like that and they are doing fine. I'm pretty sure its over / under watering. When I transplanted, i drenched the pot in water so it stayed together for an easy transplant into a 3 gallon pot. I have been watering once every 2 days about 200ml, with the exception of the transplant because it got a lot more than 250ml, maybe like 400ml. Again, all my plants got this and they are doing fine except for 2. The first 3 pics are my plant that i think is over watered. the last 2 are of a plant that has yellowish bottom leaves, but the top seems to be doing fine I think.

i dont think leaves yellow like that with over watering, it looks like it might be a PH imbalance stopping your plant from taking up nutrients properly. buy a cheap PH tester asap and find out.

The first 3 pics are of a plant that dont have any yellow, there just really droopy. The last 2 pics have a little yellowing on the bottom most fan leaves. I have a rapitest pH meter and it reads 7ish on both plants, (a little lower on the plant with yellow.

sorry my bad, the 2nd picture in looks really yellow but ive realised its just the lighting.

but yea looks like maybe overwatering. I water once every 3 days myself and my pots have lots of drainage. my soil is pretty much bone dry when i water. once i didnt water for 5 days and if anything they seemed to appreciate it. underwatering is easier to cure than overwatering

thank you sir, but what about the yellow plants, the ph read about low 7. Isnt that about where its supposed to be. When I nute with big grow, doesnt that have some pH reducers in it?

Try transplanting when the soils all but dry. If you have a healthy root system, it will hold your soil together while you re-pot it. Then, the ensuing watering will help in any TP related stress issues.
Maybe it's just me, but I can't imagine TP'ing wet soil? Seems to me the weight of the wet soil would tend to cause it to fall apart?
Anyway, I don't recall ever seeing anything re:watering before TP being desired?