Need help... leaves not looking so hot

Hey Weedhound,
Got an update on the plants: All plants are looking fine except two that still have a problem. The problem might be cured because new growth is fine on those plants but the older fan leaves continue to get worse... I bumped the nutrients up to 775ppm and pH is 5.77 right now. Ive also topped/ tried to fim them to keep their height down and also tied some back to allow more light to penetrate the new shoots coming up :) I have scheduled a nutrient change for tomorrow because I have time and I was considering flushing the whole system with clearex and regular tap water (ppm 190 & pH about 7.7) to make sure there is no salt buildup. Do you think it will harm the plants? Besides all that I'm pretty happy with my first grow and I'm learning so much everyday :stoned: Thanks so very much.

good, watching the new growth is the key here....the older stuff won't get any better at all so don't go by that. Keep an eye on your ppms and see if they rise, go down, or stay the same.

You can flush out your system between res changes. It's always a good idea (although I don't do it.....shhhh) but make sure your water if ph'd to the correct level before putting it in your rez. Anything that goes into your rez should be at the proper ph, no matter what.

How are they growing in general? Fast? Slow? Sideways?