HARDWATER? SOIL?

[lemonskunk420]

Been having problems with this cheap soil mix i tried this run.I was watering with hard water aswell and not sure if it was from the hardwater or the cheap soil i mixed up.
Ive never had a problem with hard water until the move.So i never had to worry about ppm problems,just watching the PH.At this time i have no ppm meter but ive been flushing with PH balanced RO water from the local grow shop.Guy at the shop had now idea what it could be and he says he's pretty good at that type of thing.He said if they grow out of it dont worry about it.I have a couple 2' tall plants in flower that look fine but the smaller plants look pretty bad.
Any ideas what it could be,i learned my lession this rip and from here on out i'll stick to what soils i know.Peace lemon

 

[lemonskunk420]

By the way this is the 2 in flower that have came out of it from what i can tell.

 

[hush]

Hard water is not bad for cannabis. In fact, everyone who uses RO water puts the Ca and Mg back in there before use, making it "hard" again. The problem inherent with hard water is that it is also accompanied by a high pH. That is most likely your problem.

You said you use cheap soil... I'm guessing that means it probably doesn't have good pH buffering qualities. You might want to try adding some dolomite lime to your mix, or at the very least, pH adjusting your water before you feed or water them.

I have liquid rock for water, where I am, and I use hydroponics. My plants tend to love my water, as long as I fix the pH first.

Hope that helps.

 

[lemonskunk420]

Ya i always check my PH just not my ppm.So i Know its not in the ph,unless it is high in the runoff which i will check at lights on.I dont always use cheap soil just this round,but i have learned my lession.But ya ill be adding some lime to see if it helps.I jsut wanted to get peoples ideas.Thanks for the time.

 

[CowboySpcd]

I would have to disagree with the first response. I am currently recovering from the hard water issue myself. You have to watch the ppm and ph but results will depend on the makeup of the hard water. I have sulfur, calcium, iron and a bunch of other nasties that put my tap water at over 900ppm. So feeding was pointless as it was just too much to take up. Started out looking like burn but then progressed to complete necrosis. The leaves were rusty it was so built up in them. Def a good choice on the ro water. I never had issues until my last place. In a new place now and things are looking up after a good flush. Good luck!

 

[hush]

^ Well, I was really just thinking of hard water in terms of the actual chemistry textbook definition, which is water that holds concentrations of Mg, Ca, and/or Fe. But you are right, there could be high concentrations of other elements in there as well, bringing your starting ppm right out of the tap way too high.

In cases where water supply is questionable, I recommend purchasing even a cheap $25 ec meter to know where you are right out of the tap. Also, you could check your municipal water supply's water report to see what their actual analysis is.

 

[MynameStitch]

I would have to disagree with the first response. I am currently recovering from the hard water issue myself. You have to watch the ppm and ph but results will depend on the makeup of the hard water. I have sulfur, calcium, iron and a bunch of other nasties that put my tap water at over 900ppm. So feeding was pointless as it was just too much to take up. Started out looking like burn but then progressed to complete necrosis. The leaves were rusty it was so built up in them. Def a good choice on the ro water. I never had issues until my last place. In a new place now and things are looking up after a good flush. Good luck!

damn dude thats nuts, water that hard you won't be able to feed water won't hold the nutes right with that amount of micros in it! holy shit!

anyways, that looks like magneisum issue but I know nothing about your grow no information so icant tell you how you got it until you answer these questions, when you ask for help it's best to post everything about your grow, we don't know if your growing in hydro or soil.......

ARE YOU USING?

SOIL:


How long has this problem been going on?
What STRAIN are you growing?
What was the establishing technique? (seed or clone?)
What is the age of your plants?
How long have they been in the soil mixture they are in now?
Were they in the same mixture when they were seedlings/smaller plant? If not, what mixture were they in before?
How Tall are the plants?
What PHASE (seedling, vegetative or flower) are the plants in?
What Technique are you using? (SOG, SCROG etc)
What size pots are you using? (Include how many subjects to pot)
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
What brand Nutrient's are you using?
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding?
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM of your nutrients used?
What is the pH of the "RUN-OFF"?
How often are you testing pH/ppm/EC/TDS?
What method of pH test was administered? Using Strips? pH pen?
How often are you watering?
When was your last feeding and how often are you feeding?
What size bulb are you using?
How old is your bulbs?
What is the distance to the canopy?
What is your RH Factor? (Relative Humidity)
What is the canopy temperature?
What is the Day/Night Temp? (Include fluctuation range)
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
Is the fan blowing directly at plants?
Is the grow substrate constantly wet or moist?
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?(Only if you have a tds pen)
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?(Only if you have a tds pen)
Are you using water from a water softener?
Has plant been recently pruned, cloned or pinched?
Have any pest chemicals been used? If so what and when?
Are plant's infected with pest's?


HYDROPONICS/Aero Ponics/Coco/Soiless/

How long has this problem been going on?
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents)
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...)
What STRAIN are you growing?
What was the establishing technique? (Were the seed or clone?)
What is the age of your plants?
How long have they been in there mixture they are in now?(coco,soiless etc..)
How tall are the plants?
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in?
What Technique are you using?
What substrate/medium are you using?(Hydroton, RockWool etc.)
What is the Water temperature?
What color are your roots? White? Brown? Are your roots slimy?
What Nutrient's are you using?(If growing soiless)
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding? (If using soiless)
How often are you giving nutrients? (If using soiless)
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM you are using
What is the pH of the "Tank"?
How often are you testing your pH/PPM/EC/TDS?
Are you sure your calibration is correct on your equipment?
When was your last watering?
What is your water temps?
When was your last feeding change? (ie. grow-bloom-micro-additional)
How often do you clean your system: example: Flush out water replace with clean water and nutrients?
What size bulb are you using?
How old is the bulbs you are using?
What is the distance to the canopy?
What is your RH Factor(Relative Humidity)?
What is the canopy temperature?
What is the Day/Night Temp? (Include flucutaion range)
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
Is the fan blowing directly at plants?
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?
Are you using water from a water softener?
Has plant been recently pruned, cloned off of or pinched
Have any pest chemicals been used? If so, What and When?
Are plant's infected with pest's

 

[lemonskunk420]

Stitch I understand there is alot of Q's that could be answered.
Which i understand,I've been growing the same way about 7yrs now.The only things that have changed is I moved to a place with hardwater and I tried making a new cheap mix.So I know its in the soil or from the hard water I watered with it for a bit until i noticed the yellowing.
I just thought someone might know if its from hard water or not?

Its not the strain,environment,nutes ect.I know its hard water or this soil mix.