Yesterday morning I noticed that one of my female guppies was swollen and looked like she had dropsy. I've moved her into a sick tank, bumped the temp. up to 82 F, upped the aeration, and added 1/8th teaspoon of epson salt. Should I do water changes daily, or weekly? Is there anything else that might help her (nothing too expensive please, I love her but this is just a hobby).