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Yesterday I gave my zebratank new water (refreshing)... I always pull out the thermostat and the filter becoz of the waterlevel...

This morning I woke up (first thing I always do : checking the temperature in my tanks)... I saw I've forgotten to plug the thermostat back in...

The temperature was 20,1°C (68,18°F)...

Is that terrible news??? The zebra's seem fine... They're on the old same place... I hope I was on time to plug it back in...

(Maybe they do think it's rain season now?? Colder and fresh water...)
The zebra's are now almost 2 years old...

Lol, I've done that a couple of times....and like you I only ever notice the next morning, at which point complete panic sets in I hate having to do anything in the morning, let alone start panicking!

Anyway, all my zebs are fine from the once or twice I've accidentally left the heater off...so I wouldn't worry to much, just make sure you don't do it again!

Might even set off a spawn

I would look at raising the heat back up gradually so as not to shock the fish further and as McEve stated, it might induce a spawn as the fish think that they have been deluged with cool flood water.

everything is fine with the trio the ladies are swimming, the male into the cave (although if the sexing is OK)... later on I'll post some pics to sex...

I'm relieved The temperature is now 26,6° C (79,9°F - 299,75 °K)again... the standard temperature they used to be in...

Is that a good temperature?

I've changed it in little bits... The temperature is now stable : 28,3°C (83 °K)

I read @ Planet Catfisch that they do live at temperatures from 26°C - 30°C (78,8°K - 89°K)