Need input. Third grow. DWC vets (btw, happy Veterans day

Thank you vets for protecting our freedoms.

Hello all. After a decent first grow and subsequent trash haphazard heart not in it second grow, I’ve decided to commit to a solid grow. Only I felt pressed for time and results while minimizing care reqs so I decided to do a dwc grow.

im coming across a problem just yesterday and would like to get your collective thoughts. Thank you in advance.

25 gal. HDX tote.
Ec is approx 1500.
Ph is thereabouts 6
Late seedling about 10 inches tall, two weeks from sprout . Just cropped her

Feeding advanced nutrients micro grow bloom.

First reservoir. About two weeks old. Added water to it coz ec was 1800

any questions ask.
I noticed problem on older leaves. Appears to be spreading.
Roots look ok. Dunk and rinse they are white but looks like nutes are clinging to the roots

I suspect nute burn.
or potential phosphorus potassium pr calmag

Can you all weigh in?


Edit. After looking around I added calmag since I started with RO water. Fingers crossed!

Your EC is a little high for this stage of the game. In DWC I usually half the nute requirements throughout the grow. Good call on the cal/mag.

I agree with @DreHaze. Your ppm is to high. For seedling I run around 350 ppm. Hope this helps. Happy Growing

thank you both. i think i will take your advice.

Came across this , right here on this site. posting to note for my own recog.

I think I’ve over estimated the size of my reservoir? First time.
After beating it up a little I am setting it in RO water with .3 ec of calmag.
I may need to get another germination prepped.

are there opinions of whether this is a prudent course of action? I’m thinking- not gawd awful.

check ph meter and make sure everything is good, always. if using ph down, go a little lower than optimum, if you notice ph rise over time