Guide to Nutrient Deficiency or Toxicity

Hi,

i am a romanian grower for 5 years and I think its my 11th grow now. I started directly with a hydro system (aeroflow – I think its more a nft than a hydro system) and I still have many problems. So I hope I can get some useful information here. But first my setup:

1 x 400W HPS Lamp

1 x 600W HPS Lamp (the dimmer of my ballast is broken. Therefore I have to run this lamp on 600W)

1 x Aeroflo 10

1,2 m² tend

Nutes: Canna Aqua Vega & Flores, Rhizzotonic, Boost, CannaZym, PK 13/14

Strain: White Russian (Serious Seeds)


It´s the first time I grow this strain, since my last grows were Cheese and Mazar. So I grow from seed and let them grow under MH Lamps for 2 weeks since germination. When they where 6 inch tall I decided to put them into flowering. First I used tap water and mixed it with the nuts following the recommendations by CANNA printed on the bottles. In Week 2 or 3 i´ve noticed a Magnesium deficiency so I´ve decided to mix tap water (EC 0.6) with Reverse Osmosis Water in a 50/50 Ratio because our tap water contains a lot of Calcium. I think its getting better, but there are still signs of Mg deficiency.

But the reason i´m writing is that I have a massive problem with Nitrogen abundance: i´ve reduced the nuts but the leafs are getting darker every day even though my EC isn´t that high -> 1.2! And CANNA recommends EC 1.8 or even higher! My Water tank is aprox. 24 Gallons (I know its huge, but my old water tank is broken and I only got this huge one to replace it). Finally my question: is it possible that the abundance is caused by the size of the tank? Could it be that there is too much Nitrogen in the solution even though I have a low EC? And if so: how much gallons should I use and how often should I change the water?

And my final question: anyone knows how to read in which stadium the plants are? Let me explain: now i´m in week 6 of flowering and according to CANNA it´s time to start with pk 13/14. But the buds aren´t that big and I guess I should wait a bit more… So, how do you decide when to use PK13/14.


Thanks

My nephew is having issues with his plants...could someone please help diagnose this...i'm thinking lack of potassium, mostly on the plant in front but the back one is starting to show issues now.

Doesn't look like the pic posted...

Can any one help with this one? It's in flower right now I just checked this leaf and found bugs. So i m going to start sprayong. But is that causing the purple? Here is a link to my jurnal with my set up and all.
this HTML class. Value is http://rollitup.org/

Looks like Thrips? If so break out the Spinosad

OneHitDone said:

Looks like Thrips? If so break out the Spinosad

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Spinosad? Can I get that at like home Depot or something

Vanilla Kush
This is her 26th day from seed. 2 days ago I started noticing the color changing on the leaves. Don't know what it could be as this is my first grow. I am using a Mars hydro 144X 5 reflector and it is 20 inches away. Using a 5 gallon bucket for deep water culture with plenty of air reaching the roots. I am using techna flora nutes at 1/4 strength. The Ph has been between 5.8 and 6.3. Any help is appreciated. Thank you

BossBnell said:

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Vanilla Kush
This is her 26th day from seed. 2 days ago I started noticing the color changing on the leaves. Don't know what it could be as this is my first grow. I am using a Mars hydro 144X 5 reflector and it is 20 inches away. Using a 5 gallon bucket for deep water culture with plenty of air reaching the roots. I am using techna flora nutes at 1/4 strength. The Ph has been between 5.8 and 6.3. Any help is appreciated. Thank you

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Sounds like your off to a good start. I also use Technaflora the full recipe for success on my 4 grow with same system as you. I've got an absolutely georgous blue mystic lady growing will be harvesting within next few weeks. If you start to notice what look like rust spots on upper leaves you might want to raise light I'm running a king 800 led and they recommend 36" above canopy I keep mine around 26-28". I use an Apollo 180watt ufo for supplemental lighting they recommend 18-24" for that one. Only problem with LED I see is consistency gotta play with hieghts. Good luck

squirt1961 said:

Sounds like your off to a good start. I also use Technaflora the full recipe for success on my 4 grow with same system as you. I've got an absolutely georgous blue mystic lady growing will be harvesting within next few weeks. If you start to notice what look like rust spots on upper leaves you might want to raise light I'm running a king 800 led and they recommend 36" above canopy I keep mine around 26-28". I use an Apollo 180watt ufo for supplemental lighting they recommend 18-24" for that one. Only problem with LED I see is consistency gotta play with hieghts. Good luckView attachment 3596284 View attachment 3596291 View attachment 3596284 View attachment 3596291

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Awesome to hear squirt. I greatly appreciate your input! Yeah I chose DwC this time as I never have had luck with soil in the past, and last time I tried mH and HPS I didn't have good ventilation so I figured LED would be more suitable for me. So far I haven't had a problem with the Technaflora the full recipe for success kit and I can't complain as a buddy of mine at the local hydro store gave me the whole kit for free as a sample. I have recently raised the lights to 24 inches, but might raise a bit more if need to. Thank you once again squirt.

Also I hope your harvest goes well with the blue mystic! She looks beautiful.

BossBnell said:

Also I hope your harvest goes well with the blue mystic! She looks beautiful.

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Thanks I'm always willing to help fellow growers I too have had problems with soil. I like the recipe for success but after the small kit size be prepared to pay a little unless your buddy will give free just the b1 thrive alive red in a liter was 54 bucks but I'm still very happy with products. I'm using 5 gal DWC with dripper ring. I plant in rockwool and then surround and cover with hydroton. A small thing that will help take your setup up to next level would be climate control room temp between 72-77° F and water/nutes res.at between 62-68°F. Makes a big difference for plants and rootzone colder water = more oxygen. Also make sure she gets plenty of fresh air. I also use exhale to add CO2 to my grow room. 32 bucks a bag and it lasts 6 months.pic shows plant at Second week of veg. Just to show you the dripper. You don't need a water pump the kit is about 15 bucks comes with drop tube ring and filler tube with grommets. Runs on air to create vacuum to dripper ring

Nutrient lockout
Should i flush this plant ???it is the first time i overfeed a plant it is at week 5 of flowering and i wonder if i should let it go like this feeding her with only plain water for a while or if its a serious nutrients lockout and i need to flusf it right away??? Any advice would be apreciated

Doesn't look that bad but flushing will never hurt. If anything flushing will always help prevent salt buildup in my humble opinion.

squirt1961 said:

Doesn't look that bad but flushing will never hurt. If anything flushing will always help prevent salt buildup in my humble opinion.

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Thank you for the advice i think i will give it a little flush in a few days

OK good luck just make sure ph is right 5.7 for hydro and around 6.5 for soil.

Can someone please help me identify my problem. I am about 5 weeks into flowering using all general organics go box fox farms of and watering r/0 water. Any advice appreciated

squirt1961 said:

Thanks I'm always willing to help fellow growers I too have had problems with soil. I like the recipe for success but after the small kit size be prepared to pay a little unless your buddy will give free just the b1 thrive alive red in a liter was 54 bucks but I'm still very happy with products. I'm using 5 gal DWC with dripper ring. I plant in rockwool and then surround and cover with hydroton. A small thing that will help take your setup up to next level would be climate control room temp between 72-77° F and water/nutes res.at between 62-68°F. Makes a big difference for plants and rootzone colder water = more oxygen. Also make sure she gets plenty of fresh air. I also use exhale to add CO2 to my grow room. 32 bucks a bag and it lasts 6 months.pic shows plant at Second week of veg. Just to show you the dripper. You don't need a water pump the kit is about 15 bucks comes with drop tube ring and filler tube with grommets. Runs on air to create vacuum to dripper ring

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Sorry for my delay in reply squirt. I have been re arranging/ working out a few things with my grow space. Yeah soil isn't my thing. Plus I like the quicker results in hydroponics. Damn that is quite a bit just for the thrivealive B1 red, but I'm certain it is well worth it in the long run. I hope the sample kit lasts me til the end with what I'm dealing with now. Maybe I can talk to him but if the product is good quality then I understand having to pay for it

I don't have a dripper ring so mine is just the standard DWC set up: 5 gallon bucket reservoir, hydroton, air pump, air stones, and a netpot. I'm pretty interested in getting a dripper ring for my next attempt though!! Especially because I sorta get confused on watering. Here is what I do for my watering process: 10 minutes before lights on occur. I just simply take a clear plastic cup. Dip it in the reservoir after I have tested the PH to make sure everything is ok and Then lastly I pour the water over all the hydroton in the netpot. I usually do that 3 times a day. Is this too much? Not enough ? Does it need to be done more than that? The hydroton always looks like it is no longer wet within an hour but I don't want to over water either. (If you can even over water in DWC?) i know as long as oxygen is being supplied to the roots then the roots won't have a problem or issue "drowning." I know hydroton holds some of the water and helps with humidity so I would hate to be watering too much.


I as well plant in Rockwool cubes; although I have had trouble with rockwool in the past with its alkaline PH and it ruined about 5 of my plants in their beginning stages. (even after previously soaking it in a PH of 5) Now I just cut the rockwool cube in half and I don't really have the issues anymore as the roots get through the bottom of the rockwool quicker.

After I plant my germinated seeds in rockwool I then plant the rockwool in the netpot surrounded with hydroton as well.

In fact what delayed my response was that I have been working a bit more on the climate control. I recently went out and bought an accurite device that tells me the temp and humidity and a Lasko box fan. Ever since I placed these items in there I've noticed that my temps stay in between 72° and 85°. ( daytime is usually 79° to 85° and nighttime is usually between 72° and 78°)
Is 85° pushing it ?
Humidity is usually between 28% and 40%
Hmmmmm I'm not quite sure as to what my nute/ water reservoir temp may be so I may need to get something soon for that. Although at times I do put in frozen water bottles just for shits and giggles to make sure I cool the water down in the reservoir a bit.
Okay to plenty of fresh air. The fan in there now moves the air around so I already know that's helped. I just got done researching more about the eXhale CO2.


Damn you just draw me closer and closer to that dripper squirt hahaha. Right now I'm lookin at a decent reliable PPm meter to order.

Right now she's sitting in 4 fresh gallons of water which is PH'd to 5.8
In about two hours I'll probably add the fresh batch of Nutes and PH to 5.5 or 5.6 and this time I will do half of the recommended dosage instead of 1/4 strength. Today would officially put her at the end of her 1st month.

My next question would be when is a good time to start LST ing? I thought at least 6 inches but wanted to get some input.


Lastly, here are two more I just began and planted in their DWC netpots.
Chocolate heaven from G13 labs


And
Blue venom from G13 labs

BossBnell said:

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Right now she's sitting in 4 fresh gallons of water which is PH'd to 5.8
In about two hours I'll probably add the fresh batch of Nutes and PH to 5.5 or 5.6 and this time I will do half of the recommended dosage instead of 1/4 strength. Today would officially put her at the end of her 1st month.

View attachment 3598505 My next question would be when is a good time to start LST ing? I thought at least 6 inches but wanted to get some input.


Lastly, here are two more I just began and planted in their DWC netpots.
Chocolate heaven from G13 labs
View attachment 3598507

And
Blue venom from G13 labs
View attachment 3598508

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As far as LST goes I usually wait till stems are about 8-10" long and start tying them down usually about a month and a half depending on strain. The idea is to make all the colas the same hieght that way they get the most light. Do you also top a couple times or fim there are different views to this but whatever works best for you is really all that counts. And yes I think 85° is too hot i try to keep my grow room at 77-78° max you should also try to raise humidity for now closer to 55-60% during veg 40-50% during flower less toward the end of flowering. Good luck check out I love growing marijuana for some great info from Robert Bergmans a world class grower and teacher. You can get his grow bible and plant care ebooks free on his site. I'm actually a student of his. Learning to be an expert in the future of growing

THCNBEER said:

Can someone please help me identify my problem. I am about 5 weeks into flowering using all general organics go box fox farms of and watering r/0 water. Any advice appreciated

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It's a little hard to tell from pics but looks like heat problem to me at first I'll look into it more from your pics and see what I can find probably won't get back to you today but by tomorrow I should have more info