That seems a very good reason not to use a floating switch didn't thought of it that way..
A quote from the pumps manual. "There is an automatic shut off if there is no water for 2 minutes. Pull the plug and then re-insert it
to take the controller back into operation."
So as far it looks that it is save for that..
@Wookii, what he means is that if you have a surface left of 20l and a sumb of 40l that if you place it above the middel of the sumb you only pump up <20l back in to the aquarium before the pumps shuts off. So you never can flood the tank in case of an block in you overflow.
Although it's best for the herby style overflow to pick up the first problem it is nice to have some extra insurance..
A quote from the pumps manual. "There is an automatic shut off if there is no water for 2 minutes. Pull the plug and then re-insert it
to take the controller back into operation."
So as far it looks that it is save for that..
@Wookii, what he means is that if you have a surface left of 20l and a sumb of 40l that if you place it above the middel of the sumb you only pump up <20l back in to the aquarium before the pumps shuts off. So you never can flood the tank in case of an block in you overflow.
Although it's best for the herby style overflow to pick up the first problem it is nice to have some extra insurance..