i use nutrafin liquid test kit, ive also tested my results with those who use API and got the same results, i do a 25% water change weekly (ive had her for a week) i use tap safe to treat the water never had a problem with it so far, i wasnt to concerned that she wasnt eating much as ive only just got her and heard its common for them not to eat so was just offering her different things to try and get her eating, earthworms and bloodworms also im trying to find things like ghost shrimp and night crawlers near me but most of the shops round her dont sell them, yes ive noticed in the last couple of days i can see yer pelvic bones and ive been trying desperately to get her to feed. I do have sand but i know that its not getting to gas pockets as i move it around and so did she until the last couple of days, ive had other tanks go toxic so knew to keep an eye out for that one, ive got an external filter and a internal filter running at the mo she is in a 4ft quarantine tank, she also has an air stone an air bubble and the filter inflow pipe disturbing the water surface creating oxygen in the tank. She is a baby motoro by the way and i really hope she pulls thru i would do anything for her