Mountain Tree Fresh Lotus Root Media Large 15 Piece Liners and Pond Sealants Marusei Koi Farm—often simply called

Marusei Koi Farm—often simply called "Hirasawa" by dealers and hobbyists—is one of the largest and most influential koi farms in Japan

or pond rocks

It was founded in 1960 by Seitaro Hirasawa and is now run by his son Yoshiyuki Hirasawa

Can be used in any temperature

Mountain Tree Fresh Lotus Root Media Large 15 Piece Liners and Pond Sealants Marusei Koi Farm—often simply calledSpecial lotus root and nanopores provide the ultimate environment for nitrobacteria to grow, thus enhance their performance in dealing with harmful nitrate and nitrite. Ideal biochemical filtration media Filter and mineralize water simultaneously VAST surface area for bacteria cultivation Well designed formula for fishes growth and health 3380 L Specific surface area Filtration media area increase by more than 3 times, reaching up to 3380 L thanks to