Magnesium sulfate soaked in food will work to move the gut but won’t treat the potentially active hexamita now. I suspect the hex is active now. Need the metro but can try w/o if reluctant. If not eating can dose some metronidazole or General cure to the tank. Once it’s got an appetite then the medicine works better when ingested.The only problem is the little sod ain't eating, also would the magnesium sulphate (Epson salt) soaked food not do the same job? The meeki were definitely stressed, hiding and very skittish, would only venture out when pellets went in and were very wary about it. As soon as the meds were flushed out they were straight out and about as normal