@LostxinthexMusic - I do think he should be treated with Epsom salt, but not at that high a dosage. He's in a 0.5 gal tank. Adding 1 1/2 tablespoons would be the same as 4.5 teaspoons. In his half gal tank, that would be 9 teaspoons per gallon!!!!! Much, much, much too high! I also feel that Kalari32's recommendation of 3 teaspoons per gallon is too high, as well. That would be the dosage I'd recommend for a serious illness (like dropsy). This little guy just has some constipation and swim bladder issues, which a lower dose of Epsom salt would likely resolve.
Mamabon - I recommend Epsom salt at a dosage of 1 teaspoon per gallon. I don't feel that you need to add more than this. In his half gal container, this would be 1/2 teaspoon of Epsom salt.
There are many ways to do a water change and acclimate (reintroduce) your fish back into the tank. Here is one variation to add the Epsom salt to the tank for a 100% water change:
- Note the temperature of the water.
- Using a plastic cup, scoop him, along with some of his water, into the cup.
- Clean out the tank. Refill with water at the SAME temp. Be sure to add the correct amount of water conditioner.
- Add 1 teaspoon of Epsom salt per gallon of water.
For example: Your 0.5 gal container would require 0.5 teaspoon Epsom salt.
- Stir until the Epsom salt is completely dissolved.
- Float his cup in the tank for about 15 min.
- Add a SMALL amount of NEW water to the cup. (Several tablespoons, or about 1.5 ounces.)
- Let his cup float for about 10 min.
- If the cup starts to fill too much, remove a SMALL amount of water from the cup. Discard it.
- Repeat steps 5-7, until an hour (or more) has passed.
- Gently release him into the tank.
Since his QT tank is so small, do daily water changes, using the same procedure outlined above. He can stay in Epsom salt treated water for 10-14 days.
In general, I keep them in this dosage (1 teaspoon Epsom salt/gal) until they poop, then I feed them a single pellet. If they poop again and don't have buoyancy issues, I'll put them back in untreated water. Most of the time, I'll only need to treat like this for a couple of days.