Nute burn turned to nute deficiency after adjustment?

[Livingstrategy]

A couple weeks after transplanting our 20 clones, they were looking really good/green and I decided to up the PPMs of the grow feed they were receiving. It seemed like they were experiencing potential nute lockout/nute burn shortly after the concentration was increased. I've been mixing less and less nutes since then, but the problem hasn't been working itself out. I'm trying to get this problem solved asap so that we can focus on transitioning into flower.

Some quick information:

Strain: Grandaddy Master Kush (GDP X MK)
Grow medium: Grodan Rockwool cubes + 2 plants in coco
Grow Food: Cutting Edge Grow, Botanicare cal/mag
Additives: Dutch Masters Gold Zone root zone conditioner, Great White Myco Powder (forgot exact name), Root Stimulant (again, forgot name, but main brand), Superthrive
Lights: 1K HPS, 600w HPS

Recently I've been doing approximately 300-400 PPMs of cutting edge's grow formula, 50-100 PPMs of cal-mag, and the water had 50 PPMs on average before mixing (old RO water filter, likely needs new filters).

I've been seeing signs of classic nute burn, twisting leaves (new growths especially on some of them), look of magnesium and calcium deficiency/lockout, stunted growth. I don't want to make this too long of a first post so I'll post some pics now and check back later.

Thanks a lot guys!!

 

[Livingstrategy]

So far I've gotten some decent suggestions on what the problem was/might be. For one, I didn't realize that micro was used throughout both grow + bloom with cutting edge, so that was definitely a major element that I completely missed. I'm mixing nutes right now at ~400 PPM of grow, 200 PPM of micro, and 50 PPM of cal/mag. I'm still seeing what appears to be cal/mag deficiency (lockout?), nute burn, and twisting of leaves. I've been feeding just RO water every other day for the time being.

Other suggestions have included checking for bugs at the roots, pHing runoff, and possibly a phosphorous problem. Do you guys have any suggestions on what concentrations of nutrients I should be using or any other tips to get these guys back on track? I'll be sure to post new pics in the next few days.

Thanks! =D

 

[joe fresh]

feed more imo...400 ppm might not be enough, i would cut back a bit on the cal/mg to 100ppm and raise base nutes to 600-700ppm and see if that helps

 

[Hydrolized]

feed more imo...400 ppm might not be enough, i would cut back a bit on the cal/mg to 100ppm and raise base nutes to 600-700ppm and see if that helps

Uh...his CalMag is only at 50ppm...and his base nutes are already at 600...................................

 

[Livingstrategy]

Ok, so now I finally realized that I'm supposed to be using bloom, micro, and grow all since the beginning. Now I ask you guys for suggestions on concentrations for feeding. How many ml/gal or PPM of each?

Cutting edge grow
Micro
Bloom
Cal/mag

I really want to feel confident that I'm mixing the right amount of nutes here. Any suggestions/help will be greatly appreciated!!

 

[joe fresh]

Uh...his CalMag is only at 50ppm...and his base nutes are already at 600...................................

no your wrong, you didnt read correctly....

Recently I've been doing approximately 300-400 PPMs of cutting edge's grow formula, 50-100 PPMs of cal-mag, and the water had 50 PPMs on average before mixing

this is what he was at...


starting water: 50 ppm(has cal/mg in it)
cal/mg: 50-100 ppm
base nutes: 300- 400 ppm




this is where he should be (on average, each grow room is different)

100-150 of starting water and cal/mg combined
base nutes 1.0 ec - 1.8 ec


total nutes EC solution between 1.2 - 2.0


this is just average and depending plant health, size, and grow roosm environment....ect

 

[Livingstrategy]

Any suggestions on how much of each base nutrient? Ml/gal or PPM? I've heard a lot of suggestions and I'm definitely a bit confused by now. I do have EC reading capability on my ph pen, so I will definitely try to measure that next time. This plant problem is definitely a stressor for the moment so I'm going to keep trying to find the solution until I get these guys bouncing back! This last feed I took someone's advice to do 5 ml/gal grow, 5 ml micro, 7 ml bloom, ~5 ml cal/mag, but I dont feel super confident with this which is why I'm trying to get other ideas on concentration levels. You guys are the best, thanks for taking time to help me with this problem =D

 

[joe fresh]

give it a shot at 1.6 EC and see how she takes it...cant tell you how much of each nute im not familiar with that line up


tell you what....take your RO water, mix it half half with tap water....forget the cal/mg

then take your base nutes read the labels on mixing instructions, mix accordingly...then check EC, water it down till its at 1.6EC...

 

[187020]

Excuse me?

Excuse me?

Are your roots in a metal baking pan? Pics are blurry, wuts up Holmes? How's it workin...peace

 

[Livingstrategy]

Use normal tap water? Doesn't that have chlorine? Thanks for the 1.6 EC reading suggestion. Will definitely try that.

The roots will eventually reach the baking pans, yea. Right now they're still in the process of going through the grodan cubes (6x6 inch, then 8x8 for the bottom one)

 

[joe fresh]

the reason for using half tap and half RO is to help buffer the wter ph and the tap has ca/mg and many other minerals...by doing half half tap/RP then you will most likely eliminate the need for cal/mg and will help buffer ph as RO water is unstable ph

 

[Livingstrategy]

I've tried twice to send a pic from my friend's phone to my email, but I'm having troubles receiving it for some reason. Since I started adding all 3 parts of the CES nutes, many of the plants are showing healthier new growths and signs of bouncing back, but there is still a problem with the leaves curling and crumpling on several of the plants. Two plants in particular have a bad case of these crumpled leaves and I'm not sure how I should be reacting/adjusting to this besides what I'm already doing. I tried foliar feeding some of the CES bloom (P) and some cal/mag the other day, but no real change yet.

I'm pretty sure all the plants will make it/be fine, but I'm not sure what to do about the two plants that have a pretty severe case of crumpled leaves. Any advice you guys can offer on this problem will help a lot. I'll try to get that picture/take more and post them soon. Thanks a lot for all the help!!!

 

[Livingstrategy]

Ok, I got pics of those two crumpled plants. I want to do everything I can to save them while I still can. They're definitely smaller than the rest of the pack as well, so I'm starting to question if I should mix a different concentration of nutrients to feed to them alone. They definitely suffered from before where I wasn't using any bloom/micro, so there is def micronutrient/phosphorus deficiencies going on. Most of the plants are starting to look better now that I'm using all 3 parts (Still trying to find the sweet spot PPM-wise), but these two are worsening. Any help/advice you guys could offer on these guys would be most appreciated. I don't want these guys to be left behind!!

 

[joe fresh]

give em a good flush and start from the beginning...those plants are massively locked out by either ph or salt build up..either way a flush is the way to go

 

[M.R.GT]

Joe is dead on target. It would pay to listen .

Good luck