Sometime in the middle of the night last night our power went off. My 7 year old woke me up at some ungodly hour to tell me his alarm clock was off, but I didn't really think about it properly so I didn't think to do anything about the fish. Then I got up at 7 and the power was still off (by this time it had been off for at least 2 and probably more like 4 hours). I quickly covered up the aquarium with several layers of towels to try and keep it warm. The heater was off (obviously) but also our central heating was off.
I didn't think to look at the temperature in the tank at that point so I don't know how low it went.
Then we went out for the morning (well I had to get a cup of tea from somewhere
) and when we came back the electricity was back on, but it has been going on and off ever since. Temperature in the tank is now 24 degrees but obviously will fall again if everything isn't back for the evening.
Just tested the water and found the following:
Ammonia 0
Nitrite 0
Nitrate 20
PH 7.5
So nothing bad has happened despite the heater and filter being off. Also no dead fish, much to my surprise.
Do you think there will be knock on effects to this later, for example could the ammonia rise later, or could my fish become ill later on because of this?
I didn't think to look at the temperature in the tank at that point so I don't know how low it went.
Then we went out for the morning (well I had to get a cup of tea from somewhere

Just tested the water and found the following:
Ammonia 0
Nitrite 0
Nitrate 20
PH 7.5
So nothing bad has happened despite the heater and filter being off. Also no dead fish, much to my surprise.
Do you think there will be knock on effects to this later, for example could the ammonia rise later, or could my fish become ill later on because of this?