API phosphate test kit? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 5 Old 01-27-2015, 08:51 PM Thread Starter
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API phosphate test kit?

I got an API phosphate test kit but it consistently reads my filtered water and tank water at .25, no matter what. I've heard this is a common problem, is the test kit faulty? What's a better one, and reviews on this product?
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post #2 of 5 Old 02-04-2015, 09:07 AM
How exactly do you filter your water?
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post #3 of 5 Old 02-04-2015, 09:18 AM Thread Starter
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It's a dual filtration system by GE. Not quite RO but it comes close and I also run my water through chemical filtration and carbon
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post #4 of 5 Old 02-04-2015, 10:06 AM
I certainly don't have experience with those types of filters but I wouldn't be surprised if your reading is normal. It's quite complicated to able get pure water. .25 is pretty low imo but hopefully someone with experience with these filters can give you better input.
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post #5 of 5 Old 02-04-2015, 01:39 PM Thread Starter
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Thanks. I still blame the test kit so I ordered a Hanna checker. But thank you
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