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11/24/2019, 11:53 PM | #1 |
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Join Date: Apr 2003
Location: mineola , L ,I N.Y
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Ulr hanna checker
Has any one else have crazy readings on this ,my reg checker reads 0.00 my ULR is reading 0.07 after using 3/4 of a bottle phosphate RX and 4 cups of rowa phos on a total water volume 320gals something don't add up
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11/25/2019, 12:09 AM | #2 |
RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
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Well, we do see problems with reagents, so I wouldn't be surprised if the ULR is wrong. Maybe a local fish store or a friend could make another test for you?
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Jonathan Bertoni |
11/25/2019, 11:50 AM | #3 |
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Join Date: Mar 2007
Location: Vista (San Diego county)
Posts: 201
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Mine has been pretty solid but my Hanna Calcium checker decided to start reading 600 (flashing) this weekend. I keep salifert as back up for testing.
My Hanna Alk tester started reading random numbers once. That turned out to be a low battery Sent from my iPhone using Tapatalk |
11/25/2019, 01:12 PM | #4 | |
Crab Free Zone
Join Date: Sep 2017
Location: Ontario, Canada
Posts: 2,906
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Quote:
Back to Salifert. |
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11/25/2019, 01:43 PM | #5 |
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Join Date: Mar 2007
Location: Vista (San Diego county)
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I just picked up a Trident this weekend
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11/25/2019, 03:38 PM | #6 | |
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Quote:
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Gary 180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels |
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11/25/2019, 03:40 PM | #7 |
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11/25/2019, 03:42 PM | #8 |
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Join Date: Dec 2009
Location: Wichita KS
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I've noticed that the vial clarity in the ULR is important. Dirty or scratched vials tend to result in elevated readings. Even fingerprints can mess up a test. BRS sells new vials for cheap. I replace mine when I order reagent.
Considering the accuracy/precision of the two units, the 713 could read 0 ppm while the 736 reads (25 ppb) .07 ppm. However, if the number doesn't change after all you've done, I'd suspect an issue with the vial or maybe the reagent.
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John, Current Tank Info: In-process, 90 Gallon SPS Reef |
11/25/2019, 07:39 PM | #9 |
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I agree with making sure the reagent number matches the actual checker. I bought the wrong reagent one time and results were not accurate.
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11/26/2019, 10:13 AM | #10 |
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Join Date: Oct 1999
Location: London, Ontario, Canada
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For me, I had errant reading with my ultra low until I realized that the powder wasn't totally dissolving. I confirmed by looking at drops of the sample under the microscope. The powder was inhibiting proper readings just like dirty glass of the vial and I could sample 5 tests one after the other and not have any agree with another.
As I couldn't control the timing stages of the testing I ended up warming the sample to about 90-95°F BEFORE doing the test. This allowed the powder to dissolve completely within the timing of the tester. I was able to dissolve the powder at the temperature of the tank by shaking it longer, or even letting it sit for a bit, but by then the tester timed out.
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Seahorses. Culture nanno, rotifers and brine shrimp. Current Tank Info: Seahorses |
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