Vernon Water Quality

[mike31154]

B%%$$stards! You guys even need an RO system??

[Casey8]

hehehe ... if someone can prove it that I don't need it for my sps corals then I will shut down my R/O right away.

[mike31154]

Originally Posted by Casey8

hehehe ... if someone can prove it that I don't need it for my sps corals then I will shut down my R/O right away.

Well, I reckon it boils down to what the TDS in your water consists of. If it's all calcium or magnesium, you're good to go. There should be some reports available from your water supplier, city I suppose, that lists the parameters. Chances are there are traces of undesireables, so in the end an RO is a good investment. And at your low TDS numbers, the membrane should last for a looooong time.

[Casey8]

Yes, it does last for a long time, I can't even remember how often I need to change it. For LPS or softies corals, I had never used R/O before till I switched all to sps corals. I am afraid of having some kind of metal in the water that can cause a problem for my tank, so I decided to run an R/O to keep my mind at ease about it.

[RuGlu6]

Originally Posted by mike31154

Well, I reckon it boils down to what the TDS in your water consists of. If it's all calcium or magnesium, you're good to go. There should be some reports available from your water supplier, city I suppose, that lists the parameters. Chances are there are traces of undesireables, so in the end an RO is a good investment. And at your low TDS numbers, the membrane should last for a looooong time.

My RO/DI is 4 years old and still reading zero ppm on the out flow.
In flow tapwater is 12PPM in Port Moody.

[warriorcookie]

Originally Posted by mike31154

B%%$$stards! You guys even need an RO system??

No kidding! My TDS is always over 250, and we have chloramine to deal with too!

[gregzz4]

Mike, ple Date
Mike, this sample was taken about a mile from my house, but the report is over 1 year old

I think I'll stick with my filters

Aluminum 0.07
Arsenic <0.01
Barium 0.004
Boron <0.02
Cadmium <0.0005
Calcium 4.29
Chromium <0.001
Cobalt <0.001
Copper 0.02
Iron <0.01
Lead 0.003
Magnesium 0.15
Manganese 0.004
Molybdenum <0.002
Nickel <0.001
Selenium <0.01
Silver <0.001
Sodium 1.5
Zinc 0.005

[mike31154]

Yes, like I mentioned, an RO is a great investment either way. I make wine & beer at home, so the pure water is not only for my tank critters! Despite the comparatively high tap TDS, I'm still on the same RO membrane after close to 4 years & over 14,000 US gallons of water throughput. Yes, I've been a bit anal by meticulously keeping track of my RODI water production on an Excel spreadsheet!

I used treated tap water for the first year or so my tank was up & that was clearly not a smart way to go, especially with a BTA in there. It never looked all that great until I made the switch to pure water for changes & top ups. Below is a report (also somewhat dated) of what comes out of Kalamalka Lake. I had a quick look at a more recent report & the numbers are very close to the same. Actually some good numbers for calcium, but also traces of nasties that are cause for concern over the long term.

North Kalamalka Lake Intake Water Quality 2008
Water System: Greater Vernon Water
Source: Kalamalka Lake
Facility: Kal Lake Pumpstation
Sampling Point: Kal Lake Intake
Date: 7/14/2008
INORGANIC Results (mg/L unless noted)
Aluminum <0.050
Antimony <0.0030
Arsenic <0.0050
Barium 0.027
Boron 0.021
Cadmium <0.00010
Calcium 40.6
Chloride 5.38
Chromium <0.015
Copper <0.0030
Cyanide < 0.01
Fluoride 0.24
Iron <0.20
Lead <0.001
Magnesium 19.8
Manganese <0.0050
Mercury <0.00030
Molybdenum 0.005
Nitrate (as N) 0.069
Nitrite (as N) <0.010
Potassium 5.07
Selenium <0.0050
Sodium 18.4
Sulphate 51
Uranium 0.003
Zinc 0.011
PHYSICAL Results (mg/L unless noted)
Alkalinity (as CaCO3) 152
Colour <5 TCU
Conductivity 409 microS/cm
Hardness (as CaCO3) 183
pH 7.8
Total dissolved solids 238
Turbidity 1.0 NTU
UV Transmittance @254(%) 91%

Ha,ha & edit: my water report is bigger than yours!

[gregzz4]

Hehe, ya, I only get the short-bus report
I'm glad to see you have, at least for a short time, some better water

[mike31154]

Yeah, not sure how long, but out of curiosity I just had a look at the latest report from the Duteau Creek source. Note the difference in TDS! But there are still traces of nasty stuff & the calcium is much lower. Too bad there's not a way to filter everything but the calcium & magnesium out of the Kal Lake water...

Water System: Greater Vernon Water,
Source: Duteau Creek
Facility: Headgates
Sampling Point: Headgates Cl2 bldg (1-1-SR, 5E8D)
Date of Sample: 7/19/2011
INORGANIC, Results (mg/L unless noted)
Aluminum (total) 0.114
Antimony (total) <0.0010
Arsenic (total) <0.0050
Barium (total) <0.050
Boron (total) <0.040
Cadmium (total) <0.00010
Calcium (total) <5.0
Chloride 0.21
Chromium (total) <0.0050
Copper (total) 0.0245
Cyanide (total) <0.01
Fluoride 0.13
Iron (total) 0.31
Lead (total) <0.0010
Magnesium (total) 1.23
Manganese (total) 0.02
Mercury (total) <0.00020
Molybdenum (total) <0.0010
Nitrate (as N) 0.02
Nitrite (as N) <0.01
Potassium (total) 0.8
Selenium (total) <0.0050
Sodium (total) 1.36
Sulphate 3.1
Uranium (total) <0.00020
Zinc (total) <0.040
PHYSICAL, Results (mg/L unless noted)
Alkalinity (Total, as CaCO3) 14.3
Colour 75
Conductivity 38 microS/cm
Hardness (total, as CaCO3) <12.9
pH 7.14
Total dissolved solids/TDS 44
Turbidity 0.9