u/FutureSavings3588

I had a THRIVING shrimple colony for over a year. I did a water change - nothing too crazy but it was a little more than usual - maybe 40%. I slowly refilled - added prime to neutralize any nasties and very quickly within an hour or so started losing shrimp. They are swimming at the bottom sideways or upside down then perishing. I added shrimp essential minerals to get the GH back up to no avail. It’s been 3 days and the losses keep coming. I’ve tested the water and everything is within normal parameters. GH may be a little low still. I’m down from over 100 scrimpies to maybe 30. What the heck is this massacre!?

Temp: 77.9

Size: 10 gal.

GH: 100

No3: 0

No2: 0

Cl2: 0

Kh: 80

Ph: 7.6