nabokovfan87 Posted March 24 Share Posted March 24 .....alright, buckle in, it's been an afternoon! It' been a few weeks and so I decided to test basically every tank to compare everything and to just do a sanity check. I have one tank that's newly setup and I want to see how the cycle is going. I have a shrimp tank with potential GH issues that I need to verify. I have a QT tank that just had meds in it. Finally, I have my display tank with the black corydoras. Yesterday was maintenance on the shrimp which I've missed, so I wanted to go ahead and verify I needed to do maintenance today (given bioload, I could give it a week). I got my sheet of note paper, wrote out a chart and started doing all of my tests. A. Shrimp tank is awesome and the GH level is perfectly fine. B. My thermometer is broken (dropped it two days ago) C. I found a nitrite spike and needed to change water again to resolve it. ----> Tank in question was the QT tank, which should've had a 0 and prime should've still been neutralizing it. I just did a water change yesterday to remove meds, went ahead and did another one today. .....so, what's the tale here? Yesterday I was doing my normal thing, I just happened to forget entirely that it was Wednesday, shrimp tank day. The QT tank needed cleaning and it was time to remove the meds. I just went about my normal maintenance for that tank and siphoned the sand. Trying to clean the back of the tank behind the pleco cave and one of the fry went into the bucket. I rescued the fish out and she went back into the tank with the rest of her fishy friends. Then I got a paper towel and was trying to clean off the glass. For whatever reason at this point all of the fish in the tank were extremely stressed out and trying to "swim through" the glass. Trying to basically swim through my hand, into the side of the tank to get out of the way of my hand slowly scrubbing the algae off the side of the tank. Now I know why.... Nitrite was off the chart high for me. I couldn't even tell you the last time I saw nitrite on a test, but now I know. The tank in question is intended to be plants only, one fish stocking with very low bioload. It's been going fine for quite a while until discovering this result just today because I forced myself to go out and test every tank. Even the one I just did maintenance on and everything would've been "fine". I really do appreciate the context, the message, an the advice of the video posted above. I implore you, go test all your tanks and let us know what you find. Black Cory Tank (29G): Temp: 70.3 (probably higher) PH: 6.8 GH: 200 KH: 60 Nitrite: 0 Nitrate: 10 Shrimp (29G): Temp: 73 PH: 6.8-7.0 GH: 80 KH: 80 Nitrite: 0 Nitrate: 10 QT Tank (10G): Temp: 72 PH: 7 GH: 150 KH: 50 Nitrite: 10 Nitrate: 5 Ammonia: 0 75G (Cycling): Temp: 72 PH: 6.5 GH: 100 KH: 40 Nitrite: 0 Nitrate: 0 Ammonia: 0 4 Link to comment Share on other sites More sharing options...
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