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What in the @#$%**&! |
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What in the @#$%**&! |
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12-21-2002, 09:56 PM
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#1 |
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Just Moved In
Join Date: Dec 2002
Location: St. Louis, MO
Posts: 12
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What in the @#$%**&!
I just did a pH test on my RO/DI water and it's reading 9.6. Is this right? The water in the tank is at a solid 8.3 and always has been, the source water is from the same RO/DI. I've never bothered testing just the RO water itself. I know that pH is related to the ions in the water, and the DI removes some or most of these. Is this why I'm getting what seems to be a wacked out reading? TIA.
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- 55 gal display - 20 gal sump/refugium - 440W VHO Two Ultrasun and Two Actinic - Custom built Canopy - Modified Seaclone - (My own mod method - works great!) Skimmer is next on the spend list - 65 lbs. LR - 4.5" DSB - Current aquaria reef project started 11/05/02 Raking leaves isn't that bad, it's just picking them up that sucks. |
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12-21-2002, 09:57 PM
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#2 |
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Just Moved In
Join Date: Dec 2002
Location: St. Louis, MO
Posts: 12
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Oh BTW - I'm using a Corning lab quality pH probe for my water testing. It has been calibrated.
__________________
- 55 gal display - 20 gal sump/refugium - 440W VHO Two Ultrasun and Two Actinic - Custom built Canopy - Modified Seaclone - (My own mod method - works great!) Skimmer is next on the spend list - 65 lbs. LR - 4.5" DSB - Current aquaria reef project started 11/05/02 Raking leaves isn't that bad, it's just picking them up that sucks. |
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12-22-2002, 12:43 AM
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#3 |
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Just Moved In
Join Date: Oct 2002
Location: ottawa
Posts: 8
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Not all test kits/probes work for both salt and freshwater... could this be the problem?
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CAT "I have not failed. I've just found 10,000 ways that won't work." - Thomas Alva Edison (1847-1931) |
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12-22-2002, 01:35 AM
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#4 |
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Just Moved In
Join Date: Dec 2002
Location: St. Louis, MO
Posts: 12
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This probe does work well in both fresh water and salt water. I use it for my goldfish tank and reef. I think I may have answered my own question earlier anyway by stating that ions need to be present in the water in order to measure pH. All ions or MOST ions SHOULD be removed from the water I use, hence the DI module. Duh on my part
 It's quite possible that I wouldn't get accurate readings if there were no ions in the water to measure I just wanted to see if anyone else ever ran into the same thing.
__________________
- 55 gal display - 20 gal sump/refugium - 440W VHO Two Ultrasun and Two Actinic - Custom built Canopy - Modified Seaclone - (My own mod method - works great!) Skimmer is next on the spend list - 65 lbs. LR - 4.5" DSB - Current aquaria reef project started 11/05/02 Raking leaves isn't that bad, it's just picking them up that sucks. |
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12-22-2002, 12:10 PM
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#5 |
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Just Moved In
Join Date: Nov 2002
Location: USA
Posts: 36
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RO PH test
There are special probes made specifically for RO and high purity solutions. Some probes can actually be damaged by testing RO and distilled solutions.FWIW
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12-22-2002, 07:24 PM
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#6 |
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Citizen
Join Date: Apr 2000
Location: London, Ontario, Canada
Posts: 154
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Something from back in my school days (50's) comes to mind and I believe that purified water can't accurately be tested for pH. If you add some conditioner like for fresh water, or add a marine mix salt, it adds the ions or ?? needed to properly read a pH.
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RAY'S REEF |
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12-23-2002, 08:52 AM
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#7 |
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Just Moved In
Join Date: Oct 2002
Location: ottawa
Posts: 8
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Yep, I knew that too!
 Brain Fart! 
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CAT "I have not failed. I've just found 10,000 ways that won't work." - Thomas Alva Edison (1847-1931) |
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