I picked up a used 10g tank from someone last night. It already had used, wet gravel in the bottom of it. I emptied out the gravel and rinsed it in hot water in a collander, then washed the actual tanked with a cloth and hot water. I went and got a Aqua-Tech 5-15 power filter at Wal-Mart and hooked it up after putting the gravel back in and adding the water. The water was very cloudy last night, but after running the filter all night, it looks very clear now. If I move the gravel around, it stirs up the cloudy debris again, though. I also put in those live plant bulbs you can buy at Wal-Mart, but I will have to wait for them to grow. Anyway, I want to know what kinds of fish I should start out with. Do I need algae eaters, plecos, or whatever, right now since there is still remains in the gravel from the last fish that were in there, or should I wait until I've had some other fish first? I read somewhere that zebra danios are good starter fish because they help develop the biological filter. I'm just really new to this and want to have a successful, happy tank.