May have accidentely overnuted..please help. +rep for advice

I have my plants under a 400 watt lamp, about three weeks into flowering in soil Using Jungle Juice 3-part Nutes. I feed/water them every tuesday alternating between plain water and feeding. I always let it sit out overnight. I may have accidently fed two rounds in a row because after feeding this week I saw some really good growth after the first day but now Im seeing this in areas of both my plants mostly near the bottom on littler leaves but seems to maybe be crawling up as I saw a larger fan leaf in the middle looking similar today. The leaves seem to yellow and the brown quickly and die off left to right or vice versa. I just cant remember, I usually pre mix so I know, but they looked liked they needed a feeding so I fed them. Please let me know what this looks like and what I can do to fix it. Thanks so much.

I don't see any leaf tip burn, so I don't think its that bad. The yellowing of leaves under the canopy is normal to an extent. 3 weeks seems a tad early for this to start happening, but I think you should not be worried.
Hit them with your straight PH'd water next go round.

GreatwhiteNorth said:

I don't see any leaf tip burn, so I don't think its that bad. The yellowing of leaves under the canopy is normal to an extent. 3 weeks seems a tad early for this to start happening, but I think you should not be worried.
Hit them with your straight PH'd water next go round.

Click to expand...

Thanks for the advice, I am afraid of any damage this late in the grow. I'll keep this updated as to what happens. Can you see the small leaf in the back thats all brown and curled up? That happened like overnight, after I saw some real vigourous growth the first day. Does that mean anything? Theres quite a few leaves this is happening to as well..It appears to be happening faster than regular canopy yellowing.

Keep going you doing great! Fan leaves die thats part of the plants life cycle!

Thanks a bunch for the good advice guys, I just didn't expect it to hit that hard and fast...I did give them a nice healthy feeding and they looked like they needed it so good stuff I guess! Thanks again guys. I'll be posting pics of harvest soon enough.