thankyou just what i was looking for.
On another note, anyone got any tips for removing limescale off the glass using things from around the house, as i cant get to the pet shop today and i am at a bit of a lose end so need something to do.
Dont want to be using any household cleaning agents as i was going to start cycling it tomorow with a bit of luck.
Edit: not to worry found my answer on the forum.