Amanos are hardy little creatures
Yesterday was not my best aquarium day. In the morning I did my mid-week water change, which usually takes 30 minutes. I was done with the water change, but then the canister filter didn't want to start up again. I kept displaying either 'pump defect' or 'air in system'. While fixing it I spilled a gallon or two on the floor - anyway, after 2 hours the aquarium was up and running again.
Then at 5:15pm my wife gives me a call in the office and says 'honey, the fish are behaving really weird.' the tetras were swimming close to the surface grasping for air, the otos were lying on the floor, the yoyos were in all weird positions floating through the tank. Clearly too much CO2. I asked my wife to turn of the CO2 and that I would come home asap. On the way home I got the next call - one of the yoyos decided to swim into my eheim skimmer. I explained to my wife how to open the skimmer and he was out again.
When I came home, I saw that I had to do another water change quickly. All fish were in distress. This water change only took 15 minutes and all the fish were happy again.
I just got up, got a cup of coffee and sat down in front of my aquarium to look at the plants and fish (I tend to look at the plants more). I was showing something to my wife, when she pointed at a little bucket standing next to the aquarium asking "what's swimming in there?". I use the bucket basically as a waste basket for plant cutoffs or as a drip catcher. there was about 1/4" water and in it an Amano shrimp. It must have jumped out during the CO2 episode. It was very blue (actually really cool color for an Amano) and I was able to take it out with my hand and put it back in the tank where it happily swam to the next driftwood.
The CO2 is adjusted back down. I had send my GLA regulator back to GLA to add two additional needle valves and I'm using a cheap UP Aqua single stage regulator. I don't believe anybody touched it, so it must have slowly send out more CO2. When I looked at the bubble count this morning it was more like 10bps. Can't wait to get my GLA back.
I don't believe that any fish died, my shrimp might be another story. This morning I only saw the one I had rescued, but they could also be hiding somewhere in all the plants.