Ok hear goes.
I feel I have to clarify tthe whole senareo.
But first thank you for your help.
a) I have never kept fish in my life and wrongly asumed there was nothing to it.

The fish had been kept in a 30 Gal tank in the enterance of a children's centre in which I have been working. They have been there for over ten years. (Madge is the only original fish and is a 4" Veiltail.
c) The tank was so fithy I could hardly see the fish. It had been Months since vany of the water had been changed.
d) The centre is closing down for about 6 months for a massive rebuild and the management were looking for some one to addopt the fish. (I offered)
e) The fish were taken out of the tank and placed in plastic bags. The tank was empyied and cleaned out. The gravel was washed and a number of stone ornaments were also washed.
f) The whole lot were then transfered to my flat.
g) Once home the tank was set up together with fiter, gravel, ornaments and tap water which I had ready in buckets (I had left the water for a day to get the temperature right)
h) The fish were then transfered from bags to the tank.
Then I joined Kokos and started reading about Cycling, Amonia and Nitrate, Etc.
After a week I had the water tested and was told that the amonia level was "Negligable"
I started to do 20pc every couple of days.
2 of the fish (Bill and Ben) seem to be thriving. They are very lively and love their new home.
Madge however is the one that worries me. She spends so mutch time just lying at the bottom of the tank and only comes to life at feeding time. or when I turn the light on!
It was sugested that I buy my own testing equipment and test twice a day but to be honest mony is extremely tight and I just can't afford to buy the equipment.
I really want to do the best for Bill Ben and Madge but am thinking about giving up and finding a new home for them with someone who really knows what they're doing.
Sorry for such a long posting but I am getting really upset seeing the way Madge is and really looking for advice and support.
GBY Phil