where can i buy cheap sand filters?
the sand filters are to be use in agriculture use (pineapple), does anybody know where can i buy some good ones, but still cheap?
Sand filters are used in fish hatcheries to purify water and can be relatively easily constructed on site. I suggest contacting whatever agency is in charge of aquaculture in your area to get plans for building one large enough for your needs. Some water treatment facilities for community water supplies also use sand filtration for the initial phase of water purification.
Schmutzdecke slow sand filter using biogas effluent
