Uhm, I don't suggest that. Aquariums are bad for rats, poor ventilation.
Try getting two seperate cages and, after proper quarrantine, begin the introduction process.
You can start out by placing the cages side-by-side or near each other so they may get used to the other's scent and sniff each other out through the bars.
After a few days like that you can place them in neutral territory(somehwre neither rat has been, most commonly used it the bathtub) and let them meet, groom, play, wrestle. At this time an essential saying comes in need: No blood, no foul. They may argue about who's the boss, but as long as no blood is drawn do not stop them. Anf if problems do arise, do not use your bare hands to separate them! You can wear thick gloves or spray them lightly with water. If, after a few mettings, they seem to get along, you can switch their cages(place Rat1 in Rat2's cage and Rat2 in Rat1's cage). While doing this, it's good to prepare the cage they will both be put in by cleaning it out thoroughly with a blach/water solution.
When you feel they are ready, you can put them in their new home at the same time and keep an eye out on them.
Honestly, this is just one way to do it. Others may have more suggestions.
Try getting two seperate cages and, after proper quarrantine, begin the introduction process.
You can start out by placing the cages side-by-side or near each other so they may get used to the other's scent and sniff each other out through the bars.
After a few days like that you can place them in neutral territory(somehwre neither rat has been, most commonly used it the bathtub) and let them meet, groom, play, wrestle. At this time an essential saying comes in need: No blood, no foul. They may argue about who's the boss, but as long as no blood is drawn do not stop them. Anf if problems do arise, do not use your bare hands to separate them! You can wear thick gloves or spray them lightly with water. If, after a few mettings, they seem to get along, you can switch their cages(place Rat1 in Rat2's cage and Rat2 in Rat1's cage). While doing this, it's good to prepare the cage they will both be put in by cleaning it out thoroughly with a blach/water solution.
When you feel they are ready, you can put them in their new home at the same time and keep an eye out on them.
Honestly, this is just one way to do it. Others may have more suggestions.
