OK, from reading the posts above, it sounds like:
- you feed her two Aqueon pellets per day. (Or one pellet and one bloodworm.) Once a week, she gets one flake.
- She's in a 2.5 gal tank, with one 100% and one 50% water change per week.
- there is "no stringy poop"
Is all of that correct? What is the water temp? It should be around 79F, give or take a few degrees.
She definitely looks bloated in the video, but there is no sign of swimming issues, which is good.
I used to feed my guys Aqueon pellets, until one of my fish became constipated, bloated and had buoyancy issues. I put him in Epsom salt and fasted him. Once the bloating went down, I switched all my guys over to Omega One. I have not had an issue since.
I realize that money is tight... but IMO, getting a quality food (something like New Life Spectrum pellets or Omega One Betta Buffet pellets) is worth the expense. One bottle of Omega One costs $3.99, and it will last a really long time. NLS is just slightly more expensive, and is available at Petco.
Aqueon is not a bad food. But it does contain more grain than the Omega One and NLS brands. Grains can cause constipation and bloating, especially if a fish is prone to this. Since you are not overfeeding her, it's possible that she is sensitive to the grains, which cause her to become bloated.
Feeding just 2 pellets per day is definitely not overfeeding. (I feed all of my fish more than this.) So if she's still bloated on this small amount of food, it could be that the Aqueon food doesn't agree with her. Also, since she is pooping normally, I would not feed daphnia at this time.
So, that said, here is what I would do, if this was my fish:
- Switch to a food that has less grain. I recommend getting either New Life Spectrum pellets or Omega One Betta Buffet pellets.
- Monitor her poop. Normal poop's color depends on what they're being fed, so it should be similar to the color of his food. If it's blobby, that indicates constipation. If it becomes white or stringy that *may* indicate a problem that requires more investigation.
- I would not use Epsom salt just yet, as she's pooping normally and not having buoyancy issues. I think a change to a higher protein food will relieve the bloating. If she remains bloated though, then I'd add Epsom salt (1 teaspoon per gallon, completely predissolved). Only replace the Epsom salt with your regular water change schedule. (Don't add more in between water changes. Salts don't evaporate. They remain in the water.)