Descripción
Matala negra de baja densidad
El Black Matala se puede utilizar como rejilla de soporte para otras capas de medios gracias a su diseño muy resistente y abierto. El Black Matala se utiliza ampliamente como filtro de sólidos de gran tamaño. Una sola capa de 1,5 pulgadas de espesor puede filtrar cosas como hojas, grandes grupos de algas, colillas de cigarrillos, vainas de semillas, etc. En una cámara de sedimentación, una sola capa de Black ralentizará y atrapará partículas grandes y algas filamentosas.
Como nota al margen, el Black Matala es en realidad la densidad más utilizada para el tratamiento de aguas residuales/sistemas de alcantarillado. Actualmente se utiliza en plantas de tratamiento de aguas residuales municipales en varias ciudades de todo el mundo. La configuración de flujo abierto permite que grandes volúmenes de agua sucia con una demanda biológica de oxígeno muy alta pasen sin obstrucciones. Las bacterias que crecen en estas hebras forman biopelículas gruesas en un entorno oxigenado con una distribución uniforme del flujo.
Cuando utilice Black Matala para filtrar sólidos o de forma mecánica, puede utilizar la manguera de jardín para limpiarlos con un rociador. La suciedad se desprende muy fácilmente.
Black Matala está disponible en hojas enteras de 48" x 39" x 1,5" o en medias hojas de 24" x 39" x 1,5". Las hojas enteras de Black Matala no se pueden doblar para su envío y no califican para el envío gratuito. Las hojas enteras de Black Matala deben enviarse por camión de carga LTL. Los tamaños de media hoja se pueden enviar hasta 10 por caja por UPS.
TODAS LAS VENTAS DE MEDIOS FILTRANTES SON FINALES
Gastos estimados de envío
Pago y seguridad
Su información de pago se procesa de forma segura. No almacenamos los detalles de la tarjeta de crédito ni tenemos acceso a la información de su tarjeta de crédito.
Bio media sizing
How much bio media does your pond need?
Ammonia comes from food, so that's where sizing starts. Tell us how much you feed and how warm the water runs — we'll size every media we carry against it.
1 How much do you feed?
2 How warm is the water?
Fine tuning
optionalMost koi diets run 35–40% protein — check your bag. Chamber fill only matters for moving-bed media like K1 or K+; aim for 50–65% so the media can actually tumble.
Design R is how many grams of ammonia one square metre of mature biofilm clears in a day. It is the divisor in this whole calculation — the single biggest lever on the answer.
R is not a property of the media. It's a property of the conditions: water temperature, dissolved oxygen, how briskly water moves across the biofilm, and how mature the bacterial colony is. The same K1 bead clears several times more ammonia in a well-aerated moving bed at 75°F than it does sitting in a static box at 50°F.
Because R divides, a lower R means more media. Choosing a conservative R is how you buy yourself safety margin.
What 0.50 assumes
Not all the nitrogen in food becomes ammonia — some is built into fish growth, some leaves as solids you skim out. This is the share that reaches the water column. 0.75 suits most ponds.
Every media compared
How much food goes in
Everything starts here. Food is the only meaningful source of ammonia in a koi pond, so what you feed sets the size of the biofilter you need.
How much ammonia that produces
Protein is about 16% nitrogen by weight. Only part of that nitrogen reaches the water as TAN — total ammonia nitrogen — because fish retain some as growth and some leaves as solids.
How much biofilm surface that needs
R is the nitrification rate — the ammonia one square metre of biofilm clears per day. Cold water and low oxygen slow the bacteria down, which is why a cold pond needs more media, not less.
How much media that is
Each media has a specific surface area — the square metres of usable biofilm surface packed into a cubic metre. Divide the surface you need by that figure and you have the volume to buy.
Oxygen the biofilter consumes
Nitrification burns roughly 4.6 g of oxygen per gram of ammonia processed. Warm water holds less dissolved oxygen exactly when demand peaks — so if you run warm, add aeration or size using a lower R.
Alkalinity the biofilter consumes
Each gram of ammonia processed also consumes about 7.1 g of carbonate hardness. Keep KH in the 100–150 mg/L range; if it falls, pH turns unstable and the filter stalls.
How KH gets used up, and what it takes to hold it steady →
A note on accuracy. Figures marked Verified are published by the manufacturer. Figures marked Estimated are derived from a published total surface area or from media geometry. Sizing a biofilter is a design exercise, not a precise measurement — when in doubt, size up.