ldsdbomber
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- Joined
- Jan 15, 2010
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What are the chemicals and reactions in the liquid API test kits?
What happens when they start to get past their expiry date?
What happens if you don't clean out your old test tubes properly and do other tests?
I ask because now and then I will get a 0.25 reading on ammonia or nitrite, each time it happened I double and triple checked after thoroughly recleaning test tubes and they were clearly 0. The tank is cycled, a few months old, and lightly stocked, and fairly well planted. I didn't believe the non zero results, and glad I checked
My test kits are past their expiry date, one is well past (bloody LFS!), and also on occasion I notice that I have left a bit of the old test in the plastic cap, can for example tank water & nitrite test solution cause a false positive in a following ammonia test and vice versa?
What happens when they start to get past their expiry date?
What happens if you don't clean out your old test tubes properly and do other tests?
I ask because now and then I will get a 0.25 reading on ammonia or nitrite, each time it happened I double and triple checked after thoroughly recleaning test tubes and they were clearly 0. The tank is cycled, a few months old, and lightly stocked, and fairly well planted. I didn't believe the non zero results, and glad I checked
My test kits are past their expiry date, one is well past (bloody LFS!), and also on occasion I notice that I have left a bit of the old test in the plastic cap, can for example tank water & nitrite test solution cause a false positive in a following ammonia test and vice versa?