Fishinfreak
Aquarium Advice Freak
Recently something with my API liquid master fw test kit seems to have gone bad, even though it doesn't expire till 2018. It has worked fine for the 6 or so months I have had it until the past two weeks or so. There are a few problems: My ph used to be around 8, and i think it went down to about 7.8 when I added DIY co2, but it couldve been the test kit being bad. Now the high rang ph is reading the lowest (i think its 7.4) but the low range is at its highest at 7.6. Also the NO3 (i think, it's the last one in the cycle, a nitr-something) was reading 0 four days after the most recent wc, which simply shouldn't be as before they were always about 10.
The only reason i can think of that would cause this is sometimes i forget to empty the test tubes out after testing until the next time, but i always rinse them out good then.
The only reason i can think of that would cause this is sometimes i forget to empty the test tubes out after testing until the next time, but i always rinse them out good then.