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![]() Surface Skimmer Nitratreductor NR 400 Denitrification filter for aquaria up to 400 litres. (c. 100 gallons) Nitratreductor NR 1000 Denitrification filter for aquariums up to 1000 litres (c. 250 gallons) Nitratreductor NR 5000 Denitrification filter for aquaria up to 3000 litres (c. 800 gallons) Bypassreactor BR 1000 Large volume universal reactor for chemical and biological media Overflow Box For connecting to an under tank filter system carbolitreactor Bypass filter for activated carbon |