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Old 09-11-2005, 03:20 PM   #1
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evidence of test degrading

ok,

I have feather dusters, sponges, and some hard corals that have all propogated from the new live rock i got. my test kit is two years old and no matter how many water changes i do it gives the same results of nitrates being at 20. I am wondering whether the test kit is inaccurate because one week i did two 25% water changes and the test kit gave the same results. im thinking i should go to the lfs and get the water tested there.
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30 gallon SW tank;EHEIM ECCO 2235 Canister Filter w/Miracle-Working Chemi-Pure
TetraTec UV1 UV Sterilizer;Rio 50 Powerhead ;130w PC lighting;33 Lbs. of Tonga Branch LR;Nature's Ocean Live Sand (the bagged stuff)
Livestock:2-Ocellaris Clownfish;9-Scarlet Reef Hermit Crabs;1-Regal Tang;Zoanthids, Pineapple Brain coral, Sebae Anemone, Colt Coral, Galaxea
Tank Specs as of December 29, 2005:Ammonia:0;Nitrite: 0;Nitrate=0;Cu:0
PH: 8.3
SG: 1.028;Temp: 79-84 degrees F (Adjusts throughout the day)
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Old 09-11-2005, 04:18 PM   #2
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The reagents in kits can degrade over time. I would take the water to the LFS for testing and pick up some new kits. Also, try testing something else...like your water change water or freshwater to see if you get different results. That's why I like Seachem kits, they come with a standard reagent for verifying kit accuracy.
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Old 09-11-2005, 07:29 PM   #3
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I am willing to guess the water is testing is fine. YOu have a good bit of livestock in that tank. you have cannister filters competing with liverock......your water changes are just maintaining the status quo.
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Old 09-11-2005, 07:54 PM   #4
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i took the water to the lfs and they said that the nitrates were zero and that the test kit i had does degrade over time.
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30 gallon SW tank;EHEIM ECCO 2235 Canister Filter w/Miracle-Working Chemi-Pure
TetraTec UV1 UV Sterilizer;Rio 50 Powerhead ;130w PC lighting;33 Lbs. of Tonga Branch LR;Nature's Ocean Live Sand (the bagged stuff)
Livestock:2-Ocellaris Clownfish;9-Scarlet Reef Hermit Crabs;1-Regal Tang;Zoanthids, Pineapple Brain coral, Sebae Anemone, Colt Coral, Galaxea
Tank Specs as of December 29, 2005:Ammonia:0;Nitrite: 0;Nitrate=0;Cu:0
PH: 8.3
SG: 1.028;Temp: 79-84 degrees F (Adjusts throughout the day)
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Old 09-11-2005, 07:58 PM   #5
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well, that is great news! I had thought of another thing, testing your testkit by testing some freshly mixed water. At least you found out.
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