Reading a water report..

Al Yamoni

Al Yamoni

Well-Known Member
So I just got a copy of my local water report and I don't exactly know what I am looking at...

1000 ppm (parts per million) tds (total dissolved solids)
4000 ppb (parts per billion) chlorine

What are considered safe levels? What does Ms. Jane prefer?

I would like to be able to give my girls tap water that's been left to sit and let the chlorine evap.
 
srt42fast

srt42fast

Well-Known Member
1000ppm seems really high for tap water, but than again I guess it depends on your location. My local tap water has a PPM of around 370ish. I normally use RO water, which has a PPM of 0. Currently I am adding 5ml microbloom, 2.5ml floragrow, 7.5ml of florabloom per gallon. Since my DWC bucket is 8 gallons, I normally fill it with 5 gallons of nutrient solution. So after adding a total of 25ml of micro, 12.5ml floragrow, and 37.5 of florabloom, it brings my PPM up to 670-680.

Here is a rough estimate I found that you can choose to reference:

(All values are in PPM)

Seedlings, Early Sprouts 100 to 250 (Normally I don't add nutes until the cotyledons start dying, but this was my preference)

Early Vegging 300 to 400

Full Vegetation 450 to 700

Early Blooming 750 to 950

Full Mature Blooms 1000 to 1600

(this excludes the ppm of your water)

I never came close to these values with my strain, and my plant has responded just fine. Also, if you are growing in soil or hydro will make a difference.

EDIT: I think you may have misread your report, according to the EPA, you should avoid consuming water with a PPM > 500.
(http://www.tdsmeter.com/education?id=0018)
 
hotrodharley

hotrodharley

Well-Known Member
Your tapwater is fine.No need to let chlorine dissipate. It degrades quickly on soil contact and is harmless anyway in small amounts.However read to see if the TDS is broken down and how much of each mineral (calcium, magnesium etc) is present in the water. Calcium and magnesium are usually the highest minerals present.
 
W

wiethe20

Well-Known Member
hotrodharley said:
Your tapwater is fine.No need to let chlorine dissipate. It degrades quickly on soil contact and is harmless anyway in small amounts.However read to see if the TDS is broken down and how much of each mineral (calcium, magnesium etc) is present in the water. Calcium and magnesium are usually the highest minerals present.
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That's what I was leaning towards, he only said 2 things I'm like :confused:
 
Al Yamoni

Al Yamoni

Well-Known Member
Here is a breakdown of the report


arsenic 1100 parts per trillion
barium 43-100 parts per billion
fluoride 500-900 parts per billion
copper 468 parts per billion
nitrate 3400 parts per billion
Selenium 1-330 parts per billion
chromium 10 parts per billion
Sodium 13700-80000 parts per billion
Sulfate 137-80000 parts per billion

total dissolved solids 361-416 parts per million
 
W

wiethe20

Well-Known Member
Al Yamoni said:
Here is a breakdown of the report


Arsenic 1100 parts per trillion
barium 43-100 parts per billion
fluoride 500-900 parts per billion
copper 468 parts per billion
nitrate 3400 parts per billion
Selenium 1-330 parts per billion
chromium 10 parts per billion
Sodium 13700-80000 parts per billion
Sulfate 137-80000 parts per billion

total dissolved solids 361-416 parts per million
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Lol wtf?!
 
W

wiethe20

Well-Known Member
So your tap has no calcium and magnesium ? Unless one of those words is that...I know MY water report doesn't have those things...weird no calcium and mag in your water...no boron? No chlorine or chloramine ?
 
Al Yamoni

Al Yamoni

Well-Known Member
wiethe20 said:
So your tap has no calcium and magnesium ? Unless one of those words is that...I know MY water report doesn't have those things...weird no calcium and mag in your water...no boron? No chlorine or chloramine ?
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It seems like the calmg is included in the tds reading.. not sure about boron. There is no chloramine use here.
 
W

wiethe20

Well-Known Member
Al Yamoni said:
It seems like the calmg is included in the tds reading.. not sure about boron. There is no chloramine use here.
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That's good no chloramine, that doesn't evaporate ....boron is a rare nutrient deficiency but I thought most tap water had it but I could definitely wrong on that. ..
 
safety meeting

safety meeting

Active Member
Your ppm would be consider "high" in some circles....but really its in the geology 1st and then what the water treatment plant [if applicable] is putting into the supply 2nd and go from there....

Sodium and Sulfate being high, have you googled those for a natural result?

^ In response the arsenic.....That is a PPT parts per TRILLION and if there is mercury or cinnabar anywhere in the watershed, let alone numerous other leachable substrates....you will get Arsenic traces...

EPA limits on Arsenic are 10 parts per Billion.....

The fluvial geomorphology is very important imho as the 1st part of examining the water report.....and that big fancy shit just explains and identifies the type of rock that water flows and its mineral components as analysis.

Do you have mining or agriculture or other industrial uses in the watershed....

Does the geology have a tendency for high TDS to begin with....areas of Limestone/ Volcanic / Deep Mineral Soils?
 
vostok

vostok

Well-Known Member
Al Yamoni said:
So I just got a copy of my local water report and I don't exactly know what I am looking at...

1000 ppm (parts per million) tds (total dissolved solids)
4000 ppb (parts per billion) chlorine

What are considered safe levels? What does Ms. Jane prefer?

I would like to be able to give my girls tap water that's been left to sit and let the chlorine evap.
Click to expand...
Congrats on taking the time even the interest in understanding your water

few here would be of interest or bother to acquire the same

congratulations: on taking your grow seriously

v
 
roorsmoker

roorsmoker

Well-Known Member
I know this post is slightly old, but I was wondering if any of you physics/chemistry experts could tell me how long at room temperature, 14 gallons of 60ppm tap water, containing maximum 4ppm of chlorine (not chloramine according to my water report) would take to evaporate? It's sitting in a 25 gallon active aqua reservoir with a couple air stones. Been bubbling away for about 20 hours now.

I need to get a chlorine test kit, but was wondering if that high of ppm (4ppm) would still take about 24 hours to evaporate?

Also, my water report doesn't list ANY calcium or magnesium. I am switching from RO for two reasons: 1) time and cost producing RO taking too much time and 2) 60 ppm out of the tap is absolutely insane NOT to use... especially if it doesn't contain any chloramine!
 
roorsmoker

roorsmoker

Well-Known Member
vostok said:
My plants like Chlorine, but not in excess, 24 hours to vape off is good

avoid stressing on this as plants can handle it easy

its the Calcium that can causes issues later
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Thanks for the reply!
I'm only worried about my microbes being killed off. Cannabis doesn't seem to mind a bit of chlorine, but I didn't want to kill my microbes. That being said; you are 100% correct. I couldn't smell a damn hint of chlorine after about 24 hours. It smells like a swimming pool fresh out of the tap.

They got their first "tap" water feeding, and they freaking loved it!
 

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