I recently bought a 44 gallon used saltwater tank with all the fish. They all lived through the 42 mile transport. I was very surprised to see there were over 15 beautiful fish in this aquarium. There are hermit crabs large and small. two of each. I went to our Petco store to see what was there and fell in love with the live plants. I want to get some for the bottom of the tank and the guy there told me I needed a protein skimmer. THis is a corner unit tank and is beautiful. I have been doing research and am ready to purchase a skimmer. I wanted to know if it is okay to get these beautiful plants, some look like a carpet.... with the hermet crabs and snails??? Will it be okay and they won't harm the plants.