I have a 29 gallon with BDBS substrate with some wisteria, cabomba, small piece of driftwood, and 2 large lava rocks. Ammonia 0, Nitrites 0, Nitrates 20-30, pH 7.4, Temp ranges throughout the year 68- 78. I live in Florida and don't have a heater in this tank. (I have heaters...just choose not to have one in this tank.) Currently I have 7 golden white cloud mountain minnows, 3 amano shrimp, and 12-15 panda corydoras. I started with 6 adults, had some babies, lost one of the adults, and had some more babies. They just keep showing up! I'm not doing anything at all to purposely increase the herd. My problem is that once I see the babies I can't "get rid of them". Something needs to be done before I'm over run with cory cats. I'd like for some type of fish to handle that for me. I'm thinking along the lines of a paradise fish but I really don't know much about them other than the water parameters would work. Will paradise fish eat the eggs and/or fry but leave the adults alone? Is there another option that would fit the bill? I'm open to suggestions!