one plant good the other BAD ????(pics,pics)look!!!

Ok so i posted pics of my plants like last week and i think we came to the conclussion that my problem is a 6.5 ph is too high . So i changed my water ,flushed the system with CLEAREX . but one of my plants is growing roots alot faster than the other , is it still in SHOCK , i can not figure this out . ooo and the roots are alittle brown on the tips , take a look.!!!!!!! i need advise



SORRY THE PICS ARE SIDEWAYS .

Hi reemer101,

Your res temp could be to high if the roots are turning brown it could be pythium try getting some liquid oxygen it's cheap and effective just follow the instructions on the bottle.Superthrive is an exellent additive to use also helps keep roots nice and healthy and lots of other helpful uses great stress relief for your plants and promotes new growth.