If it just needs a rinse, vinegar is great! It'll smell funny but it works wonders. If you see some spots that need scrubbing, a thick paste of baking soda works great. It got 3-year old hard water stains out of a betta bowl for me. All it took was a bit of elbow grease. Bleach can also be used, but I only like to use it as a last-ditch method.
How is little Ro's tail? Does it look like it is healing?
It looks like it hasn't got any worse, but hasn't healed yet. The base of her tail was little red though. She was also kinda acting lethargic these past few days, but NO clamping and eating normally. She comes to the top to eat now :3
Yea, I hear the size difference can lead to bullying. Ones like pearlscales would have a hard time competing with a fast comet.
Maybe a pair of pearlscales in the 40 after Ro moves out :p I love pearlscales too :D
taking a break from fish-keeping.
3 lovely male betta still keep me company.
Ya, Olympia is right. A pearlscale and a comet wouldn't make the greatest of friends due to the size difference and the speed difference. It's best to keep single-tails with single-tails and double-tails with double-tails. But the 40 gallons will be just the right size to put a pair of pearlscales in when the comets get a larger home!