So I purchased 2 clown loaches yesterday and will be going out of town for about a week. My intentions are they deal with a slightly out of hand snail problem. There are several hundred snails in the tank and will that along with plant matter be enough to tide them over until I return? It's a large tank with very few fish and the others do well just eating earthworms and copepods when I travel. Should I expect the same from them? Never dealt with loaches before, I tend to prefer smaller fish.