07-13-2007, 07:35 AM
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The plastic canvas comes in several different sizes. They are measured in number of holes to the inch. The counts are 5, 7, 10, and 14 holes to the inch. I use the 14 on the ends of my filter tubes. I sew the tube up with waxed dental floss. On the 14 count use a small needle and overlap the canvas. Do not pull hard as it breaks fairly easily. I squash the bottom of the tube closed and sew across. I put a net under it when I want to change it as the gunk falls off fairly readily when removed from the suction. I rinse it out in tap water as I want the holes cleaned out and not gunked with bacteria. I use a toothbrush to get the tough stuff off. If you don't have babies to worry about you can use a 5 or 7 mesh. For the breeder net use the 14 for the sides and bottom. Use dental floss to make a grid from side to side and front to back. Just enough grid to support a shelf. Make the shelf from the 5 or 7 mesh and set on the floss grid. Babies can fall through to the bottom and the mother can't get them.