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This is the classic straight-tube cave — a tight
The Cone is our widest
too: the enclosed shape is a favorite with crayfish and a comfortable
or fish that have been slow to commit to an open-ended cave
57 in (12 × 5 × 4 cm)
Plecoceramics Ceramic Bio Ring 21*21mm 1L / 2.02 lb for cichlids This is the classic straight-tubeIts role: high turnover flow and anti clogging built for big systems. Our largest ceramic rings, with a wide open bore that keeps water moving freely even at high flow rates. The size resists clogging and holds its flow over time, which makes these the dependable backbone of larger canisters, sumps, and fish room systems exactly where flow matters most. In a layered filter, these large rings handle the coarse, high flow first stage: strong aerobic