Calcium Defficiency?

S

silv3rbull3t

Well-Known Member
Hello All,

A little help please. Does this look like a calcium efficiency to you? The strain is lemon haze auto. She's about 4 weeks old. Its being grown in fox farm ocean forest with fox farm trio. I've been using calmag and bud candy at half strength during waterings (but not feedings). I noticed the spots on the leaves about 2-3 days ago and gave her a good flush. Shes also starting to worry me as shes not started to flower and i have other autos in the same enclosure.

All help is much appreciated
 

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JohnDee

JohnDee

Well-Known Member
Hi Silv,
The water you use is an important element in proper Ca dosage. Tap water or RO? If tap...is it hard or soft? Do you know the water EC?

Brown spots can also occur with excess Ca. So you need to look at all sources.

And while I've never grown an auto... flowering and finishing time can vary widely from strain to strain. So not to worry...
JD
 
Bernie420

Bernie420

Well-Known Member
silv3rbull3t said:
Hello All,

A little help please. Does this look like a calcium efficiency to you? The strain is lemon haze auto. She's about 4 weeks old. Its being grown in fox farm ocean forest with fox farm trio. I've been using calmag and bud candy at half strength during waterings (but not feedings). I noticed the spots on the leaves about 2-3 days ago and gave her a good flush. Shes also starting to worry me as shes not started to flower and i have other autos in the same enclosure.

All help is much appreciated
Click to expand...
Looks like phosphorus to me.
 
S

silv3rbull3t

Well-Known Member
JohnDee said:
Hi Silv,
The water you use is an important element in proper Ca dosage. Tap water or RO? If tap...is it hard or soft? Do you know the water EC?

Brown spots can also occur with excess Ca. So you need to look at all sources.

And while I've never grown an auto... flowering and finishing time can vary widely from strain to strain. So not to worry...
JD
Click to expand...
I'm using tap water. Tap water is the only water I've ever used to grow (all autos). Gonna sound dumb here but not sure what you mean by ec? I have always used ph'd tap water. Although I know this is a have variety, and I believe they are known to be finicky
 
JohnDee

JohnDee

Well-Known Member
OK Silv...
EC stands for electrical conductivity. More chemicals in the water meand higher EC. Hydro guys need to measure that as a way of measuring nutrient strength.

One way to guestimate how hard your water is...is to look at an ice cube. Crystal clear is soft water...cloudy or milky looking ice cubes is from harder water. Most tap chemicals are Ca and Mg though much depends on location.

You can check on your water supplier website. Usually you'll find annual water quality reports posted.
JD
 
S

silv3rbull3t

Well-Known Member
JohnDee said:
OK Silv...
EC stands for electrical conductivity. More chemicals in the water meand higher EC. Hydro guys need to measure that as a way of measuring nutrient strength.

One way to guestimate how hard your water is...is to look at an ice cube. Crystal clear is soft water...cloudy or milky looking ice cubes is from harder water. Most tap chemicals are Ca and Mg though much depends on location.

You can check on your water supplier website. Usually you'll find annual water quality reports posted.
JD
Click to expand...
New
johndee that helps a bunch thank you. Guessing by my ice cubes my water is rather hard. Ironically i just moved from the midwest to the south a year ago. This is my first grow in my new state. Being that my water is hard, is there any adjustment for it, or am i better off just purchasing distilled water moving foward (as im too cheap to buy a RO unit)?
 
JohnDee

JohnDee

Well-Known Member
silv,
There are a couple of different strategies that people use. First though...if you take some water in to a bottled water place like Culligans...they will happily test ec for you. EC is often expressed in parts per million. It's just that the meters can only measure EC and internally convert that number to ppm. You really can't grow to well with a ppm like 350 or above. You can find cheap meters to measure this yourself.

Where was I? Oh ya, lets say you have 400 ppm water and mix the tap 1:1 with purified/distilled water. That'll drop it down to 200 ppm which is fine.

Also if your water is way hard...you probably don't want to add more calcium via calmag. Switch to epsom salts if you need more mg.

RO filters are pretty inexpensive but hard to install in a rental place. But if you have yyour own place...where a little plumbing won't be such an issue...I'd advise it.

Gonna stop there...for now. There are plenty of threads on this, so do some searches and start reading. It'll make your growing more successful.
Later,
JD
 
S

silv3rbull3t

Well-Known Member
JohnDee said:
silv,
There are a couple of different strategies that people use. First though...if you take some water in to a bottled water place like Culligans...they will happily test ec for you. EC is often expressed in parts per million. It's just that the meters can only measure EC and internally convert that number to ppm. You really can't grow to well with a ppm like 350 or above. You can find cheap meters to measure this yourself.

Where was I? Oh ya, lets say you have 400 ppm water and mix the tap 1:1 with purified/distilled water. That'll drop it down to 200 ppm which is fine.

Also if your water is way hard...you probably don't want to add more calcium via calmag. Switch to epsom salts if you need more mg.

RO filters are pretty inexpensive but hard to install in a rental place. But if you have yyour own place...where a little plumbing won't be such an issue...I'd advise it.

Gonna stop there...for now. There are plenty of threads on this, so do some searches and start reading. It'll make your growing more successful.
Later,
JD
Click to expand...
Many thanks! You just sent me on my way to finding a solution
 
JohnDee

JohnDee

Well-Known Member
silv3rbull3t said:
Many thanks! You just sent me on my way to finding a solution
Click to expand...
You're welcome Silv...and I just wanted to add that I mentioned Culligans as a full service water supplier even though a big part of their business is water softeners. Water softeners use salt and the output water is too salty for plants.
JD
 
shaggydog365

shaggydog365

Well-Known Member
Yeah, I see your point, it's hard to give a precise answer over the web, with pics. It could be a number of issues. But I know a lot of peaple that don't care for this guy, but he has some good info, if your interested, GrowBoss live on YouTube, he's helped me out quit a bit. Even though sometimes he can be very harsh at times. But he puts things in perspective . Check him out. He's live every Saturday and sunday.at 10 am Pacific time. Maybe this will help, don't know.
 
Mullumbimby

Mullumbimby

Well-Known Member
Yay for the GrowBoss!
His videos helped me to understand 'perpetual' growing. He's very critical of overwatering and overfeeding. And overthinking actually.
 
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