wrote:

I have a good experience to tell.
Last friday when I got up I had some cabombas plants floating.
(is there a way to have them stick to the bottom definatly?)

I make a bunch of plants and wrap the stems with a lead weight.

Before I touch the water I always unplug the heater.

I've never done this in my life. But I do have an RCD on my fusebox.

For some reason I forgot to plug it back in.

Maybe you should buy a timer and put it on an hour setting to remind
you? I can never remember anything like needing to switch back on stuff.
So that's what I use. By brother left his 3 gallon aquarium switched off
for 2 weeks accidentally. The two guppies survived the 16 degrees C in
that period. Moreover, they survived with no filter.

I have my 33Gal tank set up at 24C.

When I got home roughly ten hours later, my tank temp had dropped 2C
and it was at sitting at 22C.

So it does take awhile to lose alot of temp to affect the fish.

It depends on the ambient temperature of the air around the tank.

I am glad to say that no fish seemed affected by the temp drop.

2 degrees? I shouldn't think so. It's a negligible change. My tanks
fluctuate naturally more than 2 degrees in the summer.

Nikki