What a sad day. I killed our 6 glowlight tetras. We are setting up a ten gallon for my wife. We used them to do a fish in cycle (and completed it around the beginning of the month). The tank has been stable all month. As my wife is deciding what fish she wants in the tank (the tetras came from my 20 gal community tank) we noticed that the heater was not working well and kept the tank cooler than we wanted (despite being adjustable). Last night we picked up a new one; it is a cheap one (top fin) cause our budget is tight. Its adjustable, but the nob doesn't tell you what temp you are setting, there is a thermometer built into the side.
This morning I did some re-scaping of the tank (moved plants and rocks around, nothing new added) and added the new heater. I set the temp nob some where in the middle intending to watch the tank thermometer and slowly raise the tank to a proper temp. I forgot to watch the tank thermometer. We went to church. Three hours later when we got home I looked at the tank and noticed all of them dead.
I immediately checked my water parameters. All stable (API Master freshwater liquid test kit) as they have been since we finished the cycle around the beginning of the month. Then it dawned on me that I had raised the temp nearly 10 degrees and probably rather quickly.
I guess there could be something else, but given occam's razor, the simplest and most logical explanation is the heater.
Blah. Saddest part is that three of them were the first fish we ever owned. We started with an established tank we bought used from local classifieds and three of those tetras came with the tank. Not our first loss, but the first ones from negligence (outside of ignorance).
This morning I did some re-scaping of the tank (moved plants and rocks around, nothing new added) and added the new heater. I set the temp nob some where in the middle intending to watch the tank thermometer and slowly raise the tank to a proper temp. I forgot to watch the tank thermometer. We went to church. Three hours later when we got home I looked at the tank and noticed all of them dead.
I immediately checked my water parameters. All stable (API Master freshwater liquid test kit) as they have been since we finished the cycle around the beginning of the month. Then it dawned on me that I had raised the temp nearly 10 degrees and probably rather quickly.
I guess there could be something else, but given occam's razor, the simplest and most logical explanation is the heater.
Blah. Saddest part is that three of them were the first fish we ever owned. We started with an established tank we bought used from local classifieds and three of those tetras came with the tank. Not our first loss, but the first ones from negligence (outside of ignorance).