We have recently joined Methods Classroom. In our tank we currently have Black Molly's and Black Skirt Tetras. We are currently trying to get the Bristlenose Plecostomus and Beckford's Pencilfish. We test the nitrate and phosphate once a week we also change the water once a week. Then to make sure that the fish don't keep swimming in dirty water we also change the filter. We like to make sure that our tank is clean to keep our fish and plants healthy.