i am sorry to hear that your father has had so much chemotherapy. with colon cancer it is not unusual for patients to develop problems with fluid. where does your father have the fluid? i am assuming it is in his abdomen. if this is the case there may be things that can be done to keep him more comfortable. i would encourage you/him to talk to his doctor about what might be possible.
my father has had many rounds of chemo for colon cancer and is now filling up with fluid. is there anything we can do?