Martin de leon and erwin leonor of made (modular aquaponics design and equipment) explained to us that in aquaponics, there is a recirculating process in which the waste produced by the fish is used to provide nutrients for the hydroponic plants. the fish waste works with the good bacteria in the gravel and plants and creates recyclable and. Modular aquaponics design and equipment made in the philippines made diy dwc aquaponics instructional video please don't add us on facebook and send your email address. we will be forced to send.