Leaves dieing during flowering???

Is it normal for my leafs to be drying out and dieing during flowering? Ive looked around some say yes some say no...here are some pictures now, seem a couple have fell over the last 2-3 days. Getting to much nutes? Not enough? I do the 3 part flora series and am going by the dosing on the bottle. Also have been using the liquid koolbloom (just started using that the last 2 nute changes) Im going to change out my nutes here in a minute and add some hygrozyme this run. Any help would be great thanks!!!

P.S. ive noticed its only mainly on the lower leafs.

More info....temps in room?..how often are you watering?... lights?...pH.?

temps are between 65-75, its a dwc setup I change the nutes weekly, using a 432 watt LED and 8 CFLS for bloom. Don''t know the numbers for ph as I use the liquid test kit but it usually stays yellow/orangish. I haven't had any problems lately even though I know most say to keep the ph on the yellow side, but its remained orange mostly during whole plants life. Just noticed recently the leafs are starting to fall. I wont lie this last week and a half I slacked on checking the ph might be the issue not 100% sure. I need to get a ph pen to make my life easier, been going through alot of stuff lately. Can that be due to ph?

you sure the roots are getting enough o2? no clogged stones etc? looks like nute burn but not burning just dried out maybe ease up on the nutes a lil?

Just changed out the water, the stones arent blowing as hard as they were but there are still a good bit of bubbles. On the big plant I have 2 airstones, the other plant seems to be doing fine seems the normal yellowing/dieing phase. This time I went by the chart for the nutrients instead of going by the bottles. I noticed the chart differs quite a bit from the bottle dosage. Will see how it goes, also checked the ph and it was perfectly yellow. Guess a good thing about having well water in the country heh, hopefully wont see anymore of that will let yall know. Also added some hygrozyme this round.

Was going to say yellowing and loss of leaf normal for maturing, but those in picture worry me.their green but still try wilted. Almost a root problem? Wet feet?

No disrespect but something ain't right. Possibly a 360 in your approach? Again no dis..... also need much more info where you are which allows viewers to assess & repair.

Sic Semper Tyrannus

:s4:

This looks like the begining stages of root rot to me. I'm on my 3rd RDWC grow and I've seen this once

Yank her up, look at the roots around the hydroton, and put them in your hand, see if they're squishy/slimy/brown

If they are, your gonna shock the piss out of her, but your gonna have to rinse her with CLEAN COLD WATER

If your really unlucky, your ognna have to trim those roots, stunting your cycle by a few weeks

If your even more unlucky than that, you might lose her

HOWEVER, she doesn't look that bad yet, looks like this is just taking off - The nute exchange you just did might clear this up, but for me, it was the tub of clean water and a vigorous cleaning that did the trick for me. Almost lost a perfect Big Bud because water temps got too high (thats another thing, check your water temps) The cooler the better, if your looking at temps in the high 70's or anywhere in the 80's, your going to have this problem alot, and a chiller will help

Hope this helps bro!

I check/feel the roots everytime I change the water. They are white...not slimey....dont smell. The temp is cool for the most part except the. 1 1/2 days when ac went out room was in the 80s. The only thing different ive done is with last nute change and this one since its hard to move I bought a brand new shampooer so I could suck all the water out then replace it with fresh water/nutes. It was really hard tryn to move it. Other then that nothing has changed. As I said I slacked on the ph readings the last week but hoping with a new solution change it stops. Could it be anything other then root rot? Also since they have been drinking more when I checked the res the water level was half full but the roots were still getting water and moist higher up. You said check the roots around the hydronton? You mean take it up around the base of the plant and look or inside the res? Am also about 2 months into flower. Thanks.

So I found a health store nearby (14 miles away) that carried 35% food grade h202. I hurry up and got there to get some before they closed was perfect timing heh. So what dosage would you guys recommend to help out if root rot is the problem? Thanks!!!