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Leveraging the up-flow principle
The Eheim Classic range of external filters have remained unchanged for many years
Corals and marine fish require very high levels of oxygen concentration because of the low solubility of oxygen in salt water so it is very important to regularly test the level of oxygen present
Recommended Dosage: 500 ml per 1
Eheim Aquarium Sludge Extractor 3531000 - Battery Operated Monthly_Promo Leveraging the up-flow principleThe Eheim Sludge Extractor 3531000 is an efficient tool for maintaining clean and healthy aquariums. Designed for both freshwater and saltwater tanks, this sludge extractor facilitates the quick and thorough removal of detritus without the need for water removal. Equipped with a powerful suction pump, it effectively loosens gravel layers, drawing up sludge while leaving essential bacteria undisturbed. The device is powered by four AA batteries, which