Gently rinse dust from FlorinXportPO4 with pond or tap water prior to initial use, then place media into canister filter or media receptacle and pump pond water through at the rate of up to 500 gph per kg media employed. Do not fluidize the media or place it in a location where a hard stream of water drops onto it (e.g. gravity-fed filtration from a water feature), either of which will cause the media to grind into dust. If using with FlorinXportBIO and/or FlorinXportNO3, then ensure that pond water flows through FlorinXportPO4 last. The use of a sponge or fiber pre-filter to prevent solid waste from clogging pores will improve filtration efficiency and performance, and minimize the need for rinsing the media once it has been put into use. If the pond must be medicated or treated with an algaecide, simply remove media from the system, drain water, and place the media into a covered pail. Once medication has been filtered from the system, place media back into operation. Replace media when phosphate concentration ceases to decrease (if greater than 0 ppm) or begins to increase.