Really stretching this week, up to 3cm a day. She is starting to get very thirsty and i have been feeding her 4 x a day. This works out at 3ltrs a day. I have a pump which comes on for 3 mins every 6 hrs. I get quite a bit of runoff doing this, about 300mms a day but I don't mind as I don't get a build up off salts.