Hi - I have just bought one of these second hand for my son - my first daft question is - how far up do i fill it - in particular how wet can the top of the pump (powerhead?) get - is it supposed to be completely submerged. If someone who has one of these could give me a definitive height in cms from the bottom of the tank I'd be very grateful - and we could then start cycling the tank.
Thanks
Martyn
Thanks
Martyn