i have been told using a cheap bottled water from the supermarket is better than using tap water as it is more constant and does not have chlorine. is this a good idea? with cycling, i have a cycled tank now with some filter media from my 20litre tank and i'm in the process of setting up a 60 litre tank [previous one is too small] i sort of messed up with trying to fishless cycle the tank by using fish food instead of ammonia, and it ended up getting a bit polluted when i overstocked it. aiming to do a bit better this time around.