Ok, my frog spawn is dying and I need some proper advices to help save it. My frog spawn has two head, one head is drying up and the other head is fine. It's weird why one head is dying and the other is not. Nitrite, and amonia level seem fine. Have not test my ph and nitrate, but my water quality seems fine. I have two filiters, pengiun 150 and pengiun 200. My temperature is not stable, it keep on going up to about 88 degree and dropping back down to 80 during the night due to the hot summer day. The frog spawn is in a 20gals tank.