first time DWC is this nute burn?

So this is my first dwc grow, it was all going so well...almost to well until last sunday I do my weekly water change and clean out, 3 days later this happened.it happened over night, 1day shes perfect next day this.

Anybody out there? P.s the damaged leaves are dry and brittle, 5-6 weeks old from seed

Information is as important as the pictures. First start with checking your ph, then your ppm. As well you should note temperature.

JalapenoBuds said:

Information is as important as the pictures. First start with checking your ph, then your ppm. As well you should note temperature.

Click to expand...

ph I
is 5.6 but but it creeps up to 6.5 throughout the week so I just drop it down again, ppm not a clue mistake I know....same with water temps

And are you using RO water? Cuz to me, that looks more like a possible cal/mag deficiency than nute burn. The nute burn I'm familiar with (and boy am I familiar with that asshole "Nute"....lol) starts at the edges/tips of leaves and is much more pronounced. Hence the term "burn"

Good luck

brodietheconeking said:

ph I
is 5.6 but but it creeps up to 6.5 throughout the week so I just drop it down again, ppm not a clue mistake I know....same with water temps

Click to expand...

PH will creep up as the plant uses nutrients, as it should. I change my water every 3rd or 4th day. I only check PH when I mix my nutes. Set it and forget it, don't worry about it. On top of that, not every single leaf will grow in perfect.

Also heat, don't worry about RO water. Get yourself a good Hanna meter PH/TD/EC meter.

Looks like you might have a little nute burn going on. The leaves are VERY plush a little TO plush....

Cal-Mag is more of a flowering deficiency.

Im using tap water I leave it 24 hours and then bubble for a hour,damn you throwing calmag into the scene I was puzzled between calmag or nute burn...
The only thing that put me of calmag def is this happened in 8 hours...and calmag been a flowering def but I have never ran hydro so I wasnt sure....ido need a good ec pen...hmm wat to do