I think I had a really noisy filter and I returned it to Walmart. Someone advised me to go with the undergravel kind and it is now much quieter. Haven't tried to move the aquarium back yet. I haven't been home for the last 3 wks, so I don't know how it's going. I just know that so far every mosquito fish I put in died, and most of the fathead minnows died too. Is it realistic to expect the fatheads to spawn?