Well the title says it all. This will be a first battle for me so any and all suggestions are welcome. Tank is a 20 gal with sump. From what I read the snails and stomatells should be fine. But the shrimp and crabs gotta go. I have a blood and sexy shrimp and a Pom Pom and emerald crab, as well as a few hermits. As far as interceptor goes where does one find it and what dose should be used in with such a small volume. Thanks in advance.