hey its me again, "freezer of fish", lol. i gave away my 2 goldfish, Patches & Sushi, when i moved to the mainland and did not attempt freezing them for the journey. now, i have decided to go for a fish a little more my speed, i have adopted a betta fish who i call Newton, after Isaac Newton because he is sooo smart. i love him so much. i have done alot of research about bettas now and my question is: do you think it would be alright to keep Newton in my old 2.5 gal hex tank (Patches used to live in it)?, and i need more info on water changes for him. i have read on other sites that it is recommended to add aquarium salt to the tank during weekly 100% water chages and also adding "Aquarisol". i dont know what that is, but i heard it is suppose to prevent infection. i got my most of my research fr bettatalk.com. please if anyone here is proficient at keeping bettas, then i would welcome any suggestions you have. thanks.