I just did a water change in my 80 Gallon tank for an 8" Slider. She is very healthy and active usually. I added water conditioner and drops to control algae growth. I've done nothing different than dozens of previous water changes. Now she is resting at bottom of tank with her eyes closed. This is not something I've ever seen her do except at night with lights off. The temperature is 81. Should I be panicking? Could I have done something wrong,
Thank you
Roazbear