Here is what happened yesterday the water in my Fluval EBI (planted no co2 no ferts) looked cloudy and a few of my crystals didn't look as white as normal more of a clear. I did a quick check with a test strip and all my water parameters seemed good (I couldn't pull out the full test kit with my 2yr old running around). This morning I woke up and the water looked very cloudy I went over to the tank and every living thing in it except my Otto was at the top of the tank Shrimp,snails,Panara,worms even Lil bugs. I had 5-6 dead adult shrimp (2 were berried SSS) many dead baby's and Lil bugs. I pulled out whatever dead i could and did 2 50% water changes. I have had this tank for about 8 months with no problems and no major changes the parameters and temp of the water are always in ideal range. I don't know what happened or what to do. HELP.