Posted last night that I lost my Zebra oto. Got up this morning and my German Blue Ram was dead. I tested my water and nothing looks wrong to me. I am new to this so what do you think. My tank is a 37 gallon planted tank with 9 Rasboras, 3 Corys, 3 Otos, 2 YoYos, 2 Scarlet Badis, and now 1...