Fleece filter including a filter chamber and a fleece retainer for intimately retaining fleece against inside primary filter chamber plates on being extended between a feed reel and a take-up reel. Fleece filter including a fleece filter controller having a feed reel with a feed reel encoder for enabling accurate measurement of fresh fleece dispensed from a fleece roll wherein a length of fresh fleece is a function of a fleece roll's instantaneous external diameter, fleece thickness, and a number of rotations of fleece unwound from a feed reel. Fleece filter including a fleece filter housing having a polluted water inlet, a filtered water outlet and a chemical media basket mounted on the filtered water outlet such that substantially the entire flow of filtered water from the filtered water outlet immediately subsequently passes through the chemical media basket.

A liquid filtering bag comprises a liquid-permeable fabric and zipper. When the zipper is fully engaged, the fabric folds to form a liquid filtering bag suitable for filtering liquids. When the zipper is fully disengaged, the fabric unfolds to form a flat sheet suitable for thorough washing.