Looks like nitrogen deficiency but PPM is rising?

[Dr.StickyFingers]

So The bottom leaves of my plants are turning yellow browning and dying I off I thought it was nute burn but both of my critical kush are a month into veg and I dropped them down to 580ppm from 700. Now im thinking its nitrogen deficiency but the PPM isnt dropping its rising slowly from 580... What is going on?...

 

[past times]

I am new to hydro, but I thought if nute concentration goes up after watering, you are overfeeding. And Nitrogen deficiency is more of a gradual yellowing from bottom to top. What is your pH and temperature?

 

[kryptoniteglo]

If the ppms are rising, that means the plant is drinking water but not taking up any of the nutes. What is your ph?

 

[Dr.StickyFingers]

I am new to hydro, but I thought if nute concentration goes up after watering, you are overfeeding. And Nitrogen deficiency is more of a gradual yellowing from bottom to top. What is your pH and temperature?

If the ppms are rising, that means the plant is drinking water but not taking up any of the nutes. What is your ph?

I keep the pH between 5.8-6.0 so it shouldnt be the pH. I changed the reservoir to cover my bases. It jumped about 10-20ppm over the course of the night. The pictures of the leaves are at the bottom. The top is looking healthy and beautiful but its slowly spreading. The temperature is a little hot around 80-90 and the res i think is around 75 but it has been fine for a month until now. Both nute burn and nitrogen deficiency start yellowing and dying off leaves from bottom up so I assumed PPM should tell me the difference between the 2

 

[past times]

Nitrogen doesn't have a bunch of necrotic spots early. It is a gradual lightening of the green color fading to yellow, then necrotic...

 

[Dr.StickyFingers]

Nitrogen doesn't have a bunch of necrotic spots early. It is a gradual lightening of the green color fading to yellow, then necrotic...

This has been going on for about a week and half... it is just moving VERY slowly up... nobody seems to have any idea on the last thread I posted either.

 

[perdidobandito]

Does not look like N def, but it does seem to be some sort of def.

 

[MidnightToter]

If the ppms are rising, that means the plant is drinking water but not taking up any of the nutes. What is your ph?

Exactly PPM's are going to go up because there is now less water and the plant is only taking water, not nutes. So that leaves more nutes in less water. Now I don't know what breeder or pheyno u have but the CK I grew was a nute WHORE!!! I fed her between 800-900. She ate it up and never showed one sign of burn.

What are u feeding her? I think heat is ur problem. U need to cool that room down. Trick i use to use to keep my resev. temp under control was freeze 1 liter soda bottles full of water. Drop them in my resev. And just rotate them in and out during the day. Worked for me.

 

[Dr.StickyFingers]

Exactly PPM's are going to go up because there is now less water and the plant is only taking water, not nutes. So that leaves more nutes in less water. Now I don't know what breeder or pheyno u have but the CK I grew was a nute WHORE!!! I fed her between 800-900. She ate it up and never showed one sign of burn.

What are u feeding her? I think heat is ur problem. U need to cool that room down. Trick i use to use to keep my resev. temp under control was freeze 1 liter soda bottles full of water. Drop them in my resev. And just rotate them in and out during the day. Worked for me.

Im using the lucas formula GH Micro and Bloom along w/ kelp and silica. The PPM was at 600-700 then the problems started so i dropped it down but now idk if its too much nutes or not enough but it seemed like they were doing fine at the 600-700 mark,,

 

[GrowerGoneWild]

That does not look like low N. You got something going on there, almost looks pest related. I want to say cal or mg since you are so far into veg.

Start with the basics, I think your PH is high, N is better absorbed at lower PH.

If you're into GH products just use maxi grow.. way easier to use, I save my money for the bloom nutrients.

 

[urgod]

lucas formula calls for 950ppm @ 0.5 conversion or 1330ppm @ 0.7. You are underfeeding your plants, and i am positively sure its not just nitrogen deficiency, but a variety of other issues as well due to lockout. could very possibily be your pH... when was the last time you've calibrated your pH pen?