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Replacement piece for EHEIM filters.

Specially designed sintered glass medium, with an enormous surface area of 18,300 sq. ft. per U.S. gallon.This highly-porous rock material promotes biological water purification and eliminates toxic ammonia and nitrite.

Biologically intensive filter media. Converts ammonia and nitrite into relatively non-toxic nitrate. With over 450 ml per litre (18,300 sq. ft. per U.S. gal.)

Use to start/restart the siphon for any canister filter; draws air out and water in. For all hose sizes.

Skims off the protein layer which forms on the aquarium water surface, improving oxygen exchange.

Now you can get dark green Eheim tubing in convenient, prepackaged lengths.Metric Tubing Conversion9/12mm = 3/8"12/16mm = 1/2"16/22mm = 5/8"25/34mm = 1"Please note: Tubing is available in these precut lengths only.

Now you can get dark green Eheim tubing in convenient, prepackaged lengths.Metric Tubing Conversion9/12mm = 3/8"12/16mm = 1/2"16/22mm = 5/8"25/34mm = 1"Please note: Tubing is available in these precut lengths only.

Now you can get dark green Eheim tubing in convenient, prepackaged lengths.Metric Tubing Conversion9/12mm = 3/8"12/16mm = 1/2"16/22mm = 5/8"25/34mm = 1"Please note: Tubing is available in these precut lengths only.

Now you can get dark green Eheim tubing in convenient, prepackaged lengths.Metric Tubing Conversion9/12mm = 3/8"12/16mm = 1/2"16/22mm = 5/8"25/34mm = 1"Please note: Tubing is available in these precut lengths only.

Now you can get dark green Eheim tubing in convenient, prepackaged lengths.Metric Tubing Conversion9/12mm = 3/8"12/16mm = 1/2"16/22mm = 5/8"25/34mm = 1"Please note: Tubing is available in these precut lengths only.