I have a 50 gallon tank that is cycled with a large goldfish and a few snails (mystery and nerite) and shrimp (amano and neocardina). My goldfish has very persistent gill flukes and treating her in her tank with prazipro hasn't been successful, so I'm going to move her to a quarantine tank and continue treatment. How do I keep my tank cycled without the main waste producer? Should I add some ammonia to feed the nitrifying bacteria? Will this affect the shrimp and snails? And if anyone has tips for treating flukes that seem resistant to prazipro, I'm happy to hear them. Thanks in advance.