Potassium deficiency? hydro grow issue

[Bigdmvp03]

Hey, this is my first attempt at a hydro grow. I’m running a 30 gal res. Changed my water 4 days ago. Ppm has been climbing but I’ve been adding more RO water. Air temp and water temp are good. Ph has been between 6.1-6.3 and ppm between 650-690. Any advice is appreciated!

 

[Bigdmvp03]

Forgot this one as well

 

[M0nStarNuggety]

What Nutrients are you using? and with RO water you need to make sure you have enough Cal in your solution. And if using LED lighting they seem to need a bit more from what Ive seen. I have well water, clean (140-150ppm) and still needed an extra boost
But Im only finishing my 2nd hydro grow. So no expert here

 

[Aqua Man]

Hey, this is my first attempt at a hydro grow. I’m running a 30 gal res. Changed my water 4 days ago. Ppm has been climbing but I’ve been adding more RO water. Air temp and water temp are good. Ph has been between 6.1-6.3 and ppm between 650-690. Any advice is appreciated!

Pic of the roots?

Ph a bit high.

What are all the nutrients, amounts and how are you mixing?

 

[Bigdmvp03]

General hydroponics and we are following the recommended amounts from them. During a res change I’ll ad my armor si first. Wait 30 minutes. then over the course of about an hour , hour and a half mix in the rest individually

 

[Aqua Man]

Ok what week are you on? Full dose maybe to high Imo. Do you have a ppm meter? Or going by the chart?

 

[Bigdmvp03]

I’ve been dropping the dose by 10% due to 3 of my 4 being behind on growth. I’m using the early veg dose. I just got my ph down to 5.8 and Ppm to 615. I’m gonna try to get it down to 550. Yea Ppm meter and ph meter.