{"product_id":"growmax-garden-grow-replacement-filter-pack","title":"GrowMax Garden Grow Replacement Filter Pack – 20in Filters","description":"\u003ch2\u003eFresh filters keep your Garden Grow taking out the chlorine\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGrowMax Garden Grow Replacement Filter Pack\u003c\/strong\u003e is the matched service set for the \u003cstrong\u003eGrowMax Garden Grow 480 L\/h 2-stage water filter\u003c\/strong\u003e: a \u003cstrong\u003e5 micron sediment filter\u003c\/strong\u003e that traps sand, rust and grit, and a \u003cstrong\u003ehigh-capacity green coconut carbon block\u003c\/strong\u003e that takes out \u003cstrong\u003eup to 99% of chlorine\u003c\/strong\u003e along with herbicides, pesticides and volatile organic compounds. GrowMax rate a fresh pair for about \u003cstrong\u003e27,000 litres\u003c\/strong\u003e of filtered water.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGarden Grow Sediment Filter, 5 micron\u003c\/strong\u003e (GMWSED20)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGarden Grow Green Carbon Block Filter\u003c\/strong\u003e (GMWCARB20)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatched to the Garden Grow\u003c\/strong\u003e – 20-inch cartridges for its two housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 99% chlorine removal\u003c\/strong\u003e, plus herbicides, pesticides and VOCs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 micron sediment stage\u003c\/strong\u003e protects the carbon block from grit and rust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen coconut carbon\u003c\/strong\u003e – GrowMax's high-capacity, eco-friendly media\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores full flow\u003c\/strong\u003e when a loaded sediment cartridge has cut outlet pressure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpent Carbon Lets Chlorine Back Into the Root Zone\u003c\/h3\u003e\u003cp\u003eA saturated carbon block lets chlorine straight through to your tank, and GrowMax are blunt about what it does there: it damages roots directly and kills the beneficial micro-organisms in the growing medium, mycorrhizae and Trichoderma included. The result is weaker root development and patchy nutrient uptake while the filter still looks as if it is working.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTurn off the supply and release the pressure, then unscrew both housings with the spanner supplied with the Garden Grow.\u003c\/li\u003e\n\u003cli\u003eFit the \u003cstrong\u003esediment filter first in the flow\u003c\/strong\u003e and the \u003cstrong\u003ecarbon block second\u003c\/strong\u003e, check the O-rings and refit the housings.\u003c\/li\u003e\n\u003cli\u003eRun water to waste for about \u003cstrong\u003e5 minutes\u003c\/strong\u003e, until it runs clear, before filling your tank.\u003c\/li\u003e\n\u003cli\u003eChange both every \u003cstrong\u003e27,000 litres\u003c\/strong\u003e of filtered water, and sooner if outlet pressure drops early – a clogged sediment filter is the usual cause.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GrowMax Garden Grow 480 L\/h 2-stage water filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContents:\u003c\/strong\u003e 1 x 5 micron sediment filter (GMWSED20), 1 x green coconut carbon block filter (GMWCARB20)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCartridge size:\u003c\/strong\u003e 20 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves:\u003c\/strong\u003e up to 99% of chlorine; herbicides, pesticides and volatile organic compounds; sand, rust and sediment above 5 microns\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter life:\u003c\/strong\u003e approx. 27,000 litres of filtered water per change (GrowMax)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaker reference:\u003c\/strong\u003e GMWPACKGAR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdiv class=\"hcs-faq\"\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWill this pack fit my Eco Grow or Power Grow?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. GrowMax make a separate pack for each housing size: the Eco Grow and the smaller RO units take 10-inch cartridges (the GrowMax 10 Inch Replacement Filter Pack), and the Super Grow and Pro Grow have packs of their own. This one fits the Garden Grow's 20-inch housings only.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan I change just the carbon block?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eGrowMax rate both cartridges for the same 27,000 litres and sell them as a matched pair, so they are normally changed together. On a dirty supply the sediment filter clogs first – if outlet pressure drops well before the carbon is due, that is the cartridge to look at.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWill the Garden Grow lower the EC of my tap water?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. It is a sediment and carbon filter: it strips chlorine and organic contaminants but leaves dissolved minerals in the water, so the EC stays close to your tap reading. To bring EC down you need a reverse osmosis unit.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003ch3\u003eWorks Well With\u003c\/h3\u003e\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\n\u003ca href=\"\/products\/growmax-garden-grow-480-litres-hour-2-stage-water-filter\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/growmax-garden-grow-480-litres-hour-2-stage-water-filter.jpg?v=1787262241\u0026amp;width=160\" alt=\"GrowMax Garden Grow 2-Stage Water Filter\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eGrowMax Garden Grow 2-Stage Water Filter\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eThe 480 L\/h unit this pack is made for\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/growmax-replacement-pipe\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/water-pump-1-4-inch-black-tubing-10-meter-length-growmax-replacement-pipe-70814670193013.jpg?v=1785325166\u0026amp;width=160\" alt=\"GrowMax Replacement Pipe\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eGrowMax Replacement Pipe\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003e3\/8 inch tubing for the Garden Grow's push-fit connections\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"GrowMax","offers":[{"title":"Default Title","offer_id":53929941762314,"sku":"NUT-GRO3-020-01","price":44.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/growmax-garden-grow-replacement-filter-pack-default-title-1.jpg?v=1792262965","url":"https:\/\/hydrocropshop.co.uk\/products\/growmax-garden-grow-replacement-filter-pack","provider":"Hydro Crop Shop","version":"1.0","type":"link"}