Xtreme Gardening All Purpose Feeder Paks 12-10-10 -- 500 Ct. Phat Filters Hardened steel

Hardened steel

Certified for Safety: The SUNCORE A5 Seedling Heat Mat meets UL (E518635) and MET (E115128) safety standards for electric heating appliances

Self-Flushing System: The continuous self-flushing feature enhances the dripper's resistance to clogging

Optimal Flow Range: This 3/4 inch filter operates efficiently with a flow range of 1 - 12 GPM

and the whole unit is UL listed

Xtreme Gardening All Purpose Feeder Paks 12-10-10 -- 500 Ct. Phat Filters Hardened steelAll purpose 10 gram feeder packets. Use for flowers, bulbs and vegetables. Applied to the root zone, one packet supplies slow released nutrients for an entire season. One bag has 20, 50 or 500 count of 10 gram feeder packets.