I'm extremely worried for my six precious betta fish. The circumstance may sound strange, but this is a true situation that I honestly need legitimate help with. I ended a toxic relationship recently, with today being the day he was forced to leave my home. His goodbye present to me was him crushing up xanax pills and putting them in each of my bettas tanks. Water change day is tomorrow, so I had five gallon buckets of fresh, treated water for the change already set aside and I took all of my babies out of their regular five and ten gallon set ups and put them each in a 1.5 gallon bowl of their own temporarily to get them into fresh water while I tackle their main tanks. In this case, a 100% water change should be done, correct? What about the filter? If any remnants of the medication is in them do I need to change everything out completely and lose my cycle? Gravel needs to be thoroughly cleaned too, right? This is going to be a long process, but I want it done as soon as possible because their bowls aren't heated, but I do have them in my spare bathroom with a room heater running to keep their temperatures fairly stable. Any advice on how to handle this would be appreciated so, so much! Also, is there any symptoms in the fish that I need to look out for? Everyone seems alright I guess, just somewhat more sluggish than usual. I'm hoping so hard that they all pull throw this.