Placed on either side of the filter carriage, the BioCurtain™ Biological Filter for ponds provides a large surface area for colonizing beneficial bacteria to reduce ammonia toxins from fish waste and fish food. The stainless steel hanger positions on the Filter Tank rim providing easy removal and cleaning of the poly-flow filter media.

Model BCTN20-40:

• Compatible filter -T40F
• 130 sq. ft. surface area
• Max 2 per T40F filter tank

Model BCTN20-75:

• Compatible filter -T75F
• 185 sq. ft. surface area
• Max 2 per T75F filter tank