I have a planted fluval spec v with ada aquasoil as my substrate. The original plan was to have a betta but I'm planning on getting a bigger tank and get shrimp instead for the fluval. My water parameter is perfect for bee/crystal shrimp with a pH of 6.4-6.5 and soft water. But the problem is I can not get the water to get cooler than 76 degrees. The other shrimp is a cherry shrimp but I am worried the water is too acidic and soft. I do prefer CRS so does anyone know of a small aquarium cooler/chiller that is not on expensive?