Hi all... Unfortunately I appear to be on track to lose my last 5 fish within the next few days or so. I have tried treatments available to me and nothing is helping so I think I am at the point where I just need to let it happen and start over again... and not buy fish from the pet store. What I really need to know is if I can clean and reuse gravel or if that is not advised? Or does it depend on what might be in my water? I know at least one fish was infected with Camallanus worms which I have been treating them all with Fenbenzanole from the vet but in the meantime I also seem to have some kind of fungus going on and all I can get locally is Pimafix and that is not helping. If cleaning and reusing substrate is acceptable what is the best way to do so? Also, I am done with the pet store. Is there an online order site that ships fish within Canada? If so what quality fish can I expect online? Thanks a bunch, Dawn