the water has been changed frequently, and it is at room temperature which is between 21+ celsius. so im guessing at some point today im to pick up a water heater then lol. also the fin has receded back a bit too far(even with cleaning water for hopes of getting better) and the meds was to help cure some unknown issues if any and as well as fin issues. so im going to need water softener, aqua salt or something close to(recommend?) if i cant manage to get out to grab the stuff. and a bigger tank. anything else i might be missing?