Check the listing for details. Bio-Dex Phosphate Removal, Gallon PHOS04. Condition: New. Listed at 137.77 USD. Include the Bio-dex PHOS04 Phosphate Removal, Gallon as part of your routine maintenance for ideal water conditions. Recommended Use Treat existing algae with an algaecide and sanitizer prior to applying the Bio-Dex PHOS32 Phosphate Remover Water Clarifier, Gallon.Apply the product around the perimeter of the pool while the filter is running. Do not backwash or clean during treatment.Apply smaller amounts of Phosphate Remover over a period of days to reduce clouding.Apply a maintenance dose weekly or monthly.Test your water regularly. Powered by Frooition Frooition | No-js Template | eBay design, eBay store design, eBay shop design, eBay template design, eBay listing design (ver:froo_no_js) This listing is currently undergoing maintenance, we apologise for any inconvenience caused.