do you mean whole tank or soak food in it? I've only used epsom in a QT with a loan injured fish.Give some epsom salt
Thats what do,i put about 80g amount of measured epson, 1 teaspoon per 5g. Melt in warm water then dump in the tank.I would just does the whole tank. As per DRkno4te its 1 teaspoon per 5 gal of water.
What's the temp in the tank. Some polys may swim awkwardly in lower temperature.
Nope, temp has been steadyWas there a drop in temp than normal? Some polys will throw food up when it drops.