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Large (20 × 6
The enclosed interior provides the type of shelter many plecos naturally prefer when resting or spawning
or fish that have been slow to commit to an open-ended cave
which suit the larger chamber especially well
too: the enclosed shape is a favorite with crayfish and a comfortable
Plecoceramics Ceramic Bio Ring 21*21mm 1L / 2.02 lb for cichlids Large (20 × 6Its 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