About 8 weeks ago I bought a Grreat Choice starter 10 gallon tank the came with the filter which is a grreat value internal filter. A week later I bought a blue Gourami. He has survived well. Yesterday I bought 2 Tequila sunrise guppies and a dalmation molly. After 2 hours, I found the guppies sticking out of the bottom of my filter dead. This morning I found my molly stuck to the bottom of the filter (he's too big to get in the filter) dead. Is my filter too strong? My Gourami is still doing fine.