u/Obvious_Tough_1558

Help!! Ive had this tank with my frogs going for almost 3 months. Last week i was doing some tank maintenance rinsing filter, cleaning sand all that good stuff. (Filter was rinsed in unneeded tank water) Ever since ive had 3 deaths in my tank. Before the frogs die they display this “chill” behavior. Unfortunately another one started acting that way this morning so its only a matter of time for #4. After some internet searches ive come up with 0 conclusions. I just want to know whats wrong.