Sigma zoom K-1V. F4-5.6, 70-210mm Macro zoom, Purc
Sigma zoom K-1V. will massively boost the filter and instantly start work removing ammonia and nitrite. matured media, been running my pond for 3 months complete plug & play filter these are fantastic, i swear by these filters. "Prompt feedback is very much appreciated, as this lets us know that your order has arrived safely"