Nute Burn? Mag Def? An assortment of issues..

[Sardonic]

Lights: 400w HPS.
Medium: Soil
Nutes: Fed them 1/4 grow big twice in a row WHOOPS! I've learned never to do that again..nute burns coming out my ears.
Water: Every 5 days.
PH: 7.0
Suspected Cause(s): Mag Def, Nute Burn, Overwatering

Hi guys, I'm about a month and a half in to my first grow. I had a grow diary, but it got a bit hectic and it had to be closed .

I've encountered what seems to be mag def from what I read, but being a newbie, I am of course in need of reassurance -- I'm not ashamed !


Rosebud Kush..topped a few days ago. I'd say she's the healthiest looking Rosebud of them all. Under a 43w CFL 24hr. Quite the beauty. I thought she was a boy originally, and was quite happy that out of all the 10 rosebud seeds I planted I'd only gotten one boy -- and what a healthy boy it was! WHOOPS hehe..





This is either a Shiva Skunk or Abusive OG. I can't remember, and pretty much all of them are showing some signs of this anyway..





i was testing out if they liked a 4 day watering schedule better than a 5 day one...they don't.


and last but not least..some beautiful camera work by yours truly..


in case that's too blurry, that bottom leaf has curled upwards and is dry enough to crumble at touch (nute burn?).

Thank you all for taking the time to help me.
peace

 

[3dDream]

The water should be around 6.4-6.8 for pH. That plant looks pretty pale, I would say feed it more and at the correct pH. I would gladly defer to a second opinion though.

 

[Blackvelvet]

Fox Farm Grow Big Liquid Plant Food (6-4-4) is a comprehensive blend of major, minor and micro nutrients. It is formulated to promote spectacular growth, instant green-up and color intensity of blossoms, Great for roses, tomatoes, veggies, herbs and lawns. The name says it all...expect exceptional results from Grow Big! A little goes a long way. Mix 1-3 tsp. / gal. of water. Organic based concentrate.

Ingredients: Ammonium Sulfate, Ammonium Phosphate, Urea, Blood Meal, Potassium Nitrate, Potassium Sulfate, Earthworm Castings, Norwegian Kelp, iron EDTA, zinc EDTA, manganese EDTA, copper EDTA, chelating agent, Disodium Ethylenediamine Tetra Acetate (EDTA), sodium borate, and sodium molybdate.

As you can see by the ingredients, it doesn't mention the words magnesium or calcium. If there was dolomite lime in your soil mix its probably wearing out. (This is a guess) So, you either reapply more if the ph is low or if ph is ok or high then add calcium and magnesium to your water.

How to test soil mix ph: After watering and ferting till runoff and the mix is soaking wet, wait 1 hour. Then pour a small amount of distilled water to the pot. You only want about 1 ounce of runoff out the bottom of the container. Catch this on a saucer or plate. Test ph.

If ph is low, apply about 1 1/5 teaspoons powdered/pulverized dolomite lime per gallon of soil mix to the pot surface. (3 lbs per 27 cubic feet) Water in.

If ph is ok or high, add 1/8 teaspoon epsom salts and calcium nitrate per gallon of water along with the grow big. This will add about 15 ppm mg and 35 ppm ca. Calcium chloride sold in bottles under names like blossom end rot stopper for tomatoes could be used instead of calcium nitrate but will take the % ca and net weight of the bottle to give you a rate. Either is ok. Powdered gypsum at 1/8 teaspoon could also be a substitute but is not very water soluble so this is the last option. Beer wine making stores have this.



Remember calcium nitrate at 1/8 teaspoon will also add about 28 ppm nitrogen. Not really much more. Calcium chloride and gypsum (calcium sulfate) add no nitrogen.

You stated you have soil. Is it really soil or soilless? Peatmoss, vermiculite, perlite, bark, etc... should have a ph of 5.6 to 6.2. You would adjust the fert water after adding everything to 5.8 to 6.0 If you truly have soil like loam and clay (at least 30% of the total), I don't suggest having your ph higher than 6.5

You should feed with every watering. Also, fert water should pour out the bottom. You want alot of runoff everytime.

How much to feed? I would try about 100 ppm nitrogen using the grow big 6-4-4.
Assuming/guessing grow big weighs 1 gram = 1 ml
Example: 1ml in a gallon of water
1 divided by 3.8 liters = .26 grams in 1 liter
.26 grams x .06 nitrogen in grow big = .0158 grams of nitrogen in 1 liter
.0158 g x 1000 = 15.8 mg n in 1 liter or 15.8 parts per million nitrogen
100 divided by 15.8 = 6.3 so you would add 6.3 ml of grow big to a gallon of water
1 teaspoon = 5 ml

Adjust fert water ph after adding everything.

Run the 400 watt hps 18/6 and about 1 foot from the tops.

 

[Levitikuz]

 

[Sardonic]

Thanks for the advice guys, I really appreciate it. I've read a few places to never feed twice in a row..now you're telling me to always feed them? ~_~.

Well, watering day is tomorrow, so I'll gather some more information and make the big decision lol...

thanks again

 

[Levitikuz]

Ive been told by alot of people not to listen to him, now i no why....hes full of shit!
dont listen to velvet! wtf is "try to add about 100 ppms of Nitrogen using the grow big 6-4-4"
And hes telling you to feed everytime you water and to basically drench the shit out of your soil also...dont listen to him!

 

[Sardonic]

oh is that why you were laughing? You should have said something! what if i would have drenched them, Levitikuz? Then what?!?! hehe..
thanks for the heads up

 

[Sardonic]

my plants seem to have gotten worse..

lots of them are showing these signs:

 

[toohighmf]

question

question

what brand of soil are you using? Many people have come to my old shop with similar complaints when using Foxfarms Ocean Forrest. There is already guano and kelp in the mix and it is a pretty "hot" Ferted soil good for the first 3-4 weeks stand alone. People were transplanting into O.F and adding nutrient solution to the newly repotted plants and just frying them! If you are using reverse Osmosis water and are not replenishing the stripped water of its benefits, its time to do so with CALmg, epsom salts, calmax, sensical mg, and more epsom salts. It is rare to see a magnesium or calcium toxicity, and generally has other elements like iron, molybdenum, and other trace minerals. good stuff for plants. I would say from the pics there is both signs of overwatering, overferting and a possible lockout or deficiency. SO ....
WHo is your daddy and what does he do? I mean what soil are you using? and whats your water source? If tap or brita filtered tap, what are the ppms of your water? tap with all the chlorine and chloramine, copper and carbon is no bueno!

ALso.. WHat do your roots look feel and smell like? are they fuzzy and dry feeling or are they wet, brown and slimey? do they smell like fresh soil or rotton egg farts? As I look at your pics, I noticed the cupping of the leaves and couldnt help but wonder if the problem is pythium related? and fungus gnats patrolling your grow? your plants look under attack from either disease and bugs or you!

 

[Sardonic]

I'm using Fox Farm Ocean Forest cut with about 30% perlite. I use tap water, I don't know the ppms of it.

I did transfer to FFOF and give them nutes

the roots are white and fuzzy. I'd smell them, but if I popped them out right now the soil would fall apart due to dryness. The roots are popping out of the bottom though. look healthy to me

my current theory is that when i transfered them to FFOF and gave them nutes twice in a row I burned them. Then 4 days later I watered them again and that's when they were overwatered. Now they're hungry for nutes and sucking 'em all up out of their leaves. Watering is tomorrow. I figured i'd water with 1/4 grow big to aide the problem, and continue to do so every other week. eventually upping to 1/2 grow big.

how's that sound?

 

[toohighmf]

If I remember correctly..

If I remember correctly..

socal water is above 500ppm. by the beach your lookin at 700+. Downtown, East LA.. 700+ Tap water at anything above 500 ppms is going to fry plants when using a fertilized soil with more feedings. I think its time to invest in A R/O unit and buy some calmg and epsom salts. Fresh hot soil with organic ferts on top is going to fry things without waterings between feedings.

 

[Levitikuz]

oh is that why you were laughing? You should have said something! what if i would have drenched them, Levitikuz? Then what?!?! hehe..
thanks for the heads up

Lol sorry, i should have said somthing earlier! Well it looks like you got the right answers in here now!
Good luck on fixing ur issue, next time ill throw you my advice lol

 

[MynameStitch]

DO NOT listen to black Velvet for all we know he is a cop cause all he does is spread bad info around like the DEA hacking down fields!

 

[Levitikuz]

lmfao!!! ^^^^^

 

[MynameStitch]

frirst off nitrogen is poorly absorbed in soggy soils and with that add on top the nturients and the hotness of the soil you got trouble.

I would personaly try this if it does not get better in a few days.

I would trim the rootball and put into different soil; this may sound crazy but if it sits in that soil it won't grow but slow because it waS Over watered and soil is hot.

You really can't do much because the only way to get rid of overfeeding is to flush and since it's overwated well you are kinda stuck except to help dry the soil out quicker with a fan.

 

[Sardonic]

socal water is above 500ppm. by the beach your lookin at 700+. Downtown, East LA.. 700+ Tap water at anything above 500 ppms is going to fry plants when using a fertilized soil with more feedings. I think its time to invest in A R/O unit and buy some calmg and epsom salts. Fresh hot soil with organic ferts on top is going to fry things without waterings between feedings.

ahrrrrrrrrg. What a horrible thing to say to a man with $0.00 dollars in his pockets .

Honestly, I have no money to spend on plants right now =[

frirst off nitrogen is poorly absorbed in soggy soils and with that add on top the nturients and the hotness of the soil you got trouble.

I would personaly try this if it does not get better in a few days.

I would trim the rootball and put into different soil; this may sound crazy but if it sits in that soil it won't grow but slow because it waS Over watered and soil is hot.

You really can't do much because the only way to get rid of overfeeding is to flush and since it's overwated well you are kinda stuck except to help dry the soil out quicker with a fan.

I hope no one takes offense to this, and I do appreciate everyone else pitching in advice, but I'll be taking ^^^ his advice. He has a damn stickied thread on plant issues for christs sake..

Stitch, I don't understand what you mean by 'trim the rootball'. Could you please clarify?

Lol sorry, i should have said somthing earlier! Well it looks like you got the right answers in here now!
Good luck on fixing ur issue, next time ill throw you my advice lol

 

[Dr Dog]

Hey Bro got your PM, stitch will know more than I will, but the last few pics look very overwatered.
By trim the rootball, he basically means get the plant out of the pot and cut a section of the roots off, so pretty much slice the dirt and all off.
Good luck with it

 

[toohighmf]

sardonic, Filtered water from the grocery store or wateria cost .25 a gallon for 0ppm water. epsom salts cost about $2 a bucket. a pinch in a 30g rez will cover it. Depending on the size of your rez, will determine how much change you'll have to pull from the couch cushions to start using filtered water. SInce you are going to use much less water to feed, I bet you can afford to buy water until you can get a r/o unit. I wouldnt use any ferts for a lil while as the foxfarm is ferted more than enough. hope that helps.

 

[Sardonic]

ah, thanks for responding Dr Dog

 

[Sardonic]

oh yes, and Stitch, you said to try that if it didn't get better in a few days..so, tomorrow is my scheduled watering (It'll have been 5 days since last watering). Should I feed them tomorrow?