its happenin again ...i did a water change and my female motaguense is twitching and freaking out again like she is having a epileptic break down ..smimming kinda like a stunt plane doin tricks ..swimmin upside down sideways crazy hittin the top of the tank smashing into the sides like no control of her body ...its happend to other fish in my tank befor and they ended up dead but it seems like it hits one fish at a time never more then 1 fish at the same time .. cant fig this out..ima bout to say screw this and sell everythinggg!!!!!