{"product_id":"growmax-water-booster-pump-kit","title":"GrowMax Water Booster Pump Kit – For Reverse Osmosis Units","description":"\u003ch2\u003eBring a weak mains supply up to the pressure an RO membrane needs\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGrowMax Water Booster Pump Kit\u003c\/strong\u003e (GMWROPUMPKIT) raises the inlet pressure of a \u003cstrong\u003eGrowMax Power Grow 500\u003c\/strong\u003e or \u003cstrong\u003eMaxquarium 000 PPM\u003c\/strong\u003e reverse osmosis system where the mains supply is too weak to drive the membrane. GrowMax recommend it wherever incoming water pressure is \u003cstrong\u003ebelow 40 PSI (3 kg\/cm²)\u003c\/strong\u003e; the kit lifts it to \u003cstrong\u003e60+ PSI (4 kg\/cm²)\u003c\/strong\u003e, so the unit produces pure water faster and sends less to drain. The \u003cstrong\u003e24V DC diaphragm pump\u003c\/strong\u003e runs from a mains power adaptor and fits in the feed line ahead of the RO unit, with a shut-off switch that stops the pump once the storage tank is full.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrowMax 24V DC diaphragm booster pump\u003c\/strong\u003e (GMWROPUMP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMains power adaptor\u003c\/strong\u003e — 220–240V AC in, 24V DC out\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShut-off pressure switch\u003c\/strong\u003e, wired to the pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection tubing\u003c\/strong\u003e for the feed line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoosts to 60+ PSI\u003c\/strong\u003e from supplies below 40 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore pure water, less waste\u003c\/strong\u003e — the membrane works at the pressure it was designed for\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatched to the Power Grow 500 and Maxquarium 000 PPM\u003c\/strong\u003e — GrowMax's own compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic shut-off\u003c\/strong\u003e with the GrowMax float valve kit — the pressure switch cuts the pump when the tank is full\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple fitting\u003c\/strong\u003e — push-fit tubing and a plug-in 24V adaptor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLow Mains Pressure and a Slow, Wasteful RO Unit\u003c\/h3\u003e\n\u003cp\u003eA reverse osmosis membrane needs pressure to push water through it. Below about 40 PSI the output slows to a trickle, a larger share of every litre goes to drain, and the membrane rejects dissolved salts less well, so the EC of the water filling your reservoir creeps up. Raising the feed pressure to 60 PSI or more puts the system back in its working range and makes clean, low-EC water for the nutrient tank quicker to collect.\u003c\/p\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck your mains pressure first\u003c\/strong\u003e — the kit is for supplies under \u003cstrong\u003e40 PSI (3 kg\/cm²)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit the pump in the feed line\u003c\/strong\u003e between the water supply and the RO unit, following GrowMax's connection diagram for the Power Grow 500 or Maxquarium 000 PPM; seal the pump's elbow connectors with PTFE tape\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit the shut-off switch only with the GrowMax Float Valve Kit\u003c\/strong\u003e installed in the tank: the float valve stops production when the tank is full and the switch then cuts the pump's power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNever leave the pump running against a closed system\u003c\/strong\u003e — it is a DC pump and can burn out if its power is not cut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug the adaptor\u003c\/strong\u003e into a mains socket in a dry place, away from the water lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e GrowMax Water Booster Pump Kit (GMWROPUMPKIT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with:\u003c\/strong\u003e GrowMax Power Grow 500 and Maxquarium 000 PPM reverse osmosis systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse where:\u003c\/strong\u003e inlet pressure is below 40 PSI (3 kg\/cm²)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoosted pressure:\u003c\/strong\u003e 60+ PSI (4 kg\/cm²)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump:\u003c\/strong\u003e 24V DC diaphragm pump; open flow 0.26 GPM (about 1 litre per minute); rated to 120 PSI (8.5 kg\/cm²)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower adaptor:\u003c\/strong\u003e input 220–240V AC, 50\/60Hz; output 24V DC, 1.2A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for:\u003c\/strong\u003e the Mega Grow 1000 (it takes the GrowMax High Flow Booster Pump Kit)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\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 it fit my Mega Grow 1000?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. GrowMax specify the High Flow Booster Pump Kit for the Mega Grow 1000. This kit is for the Power Grow 500 and the Maxquarium 000 PPM.\u003c\/p\u003e\u003c\/details\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;\"\u003eHow do I know if I need a booster pump?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eMeasure the pressure at the tap that feeds your RO unit. If it is under 40 PSI (3 kg\/cm²), or the unit makes water slowly and sends a lot to drain, the kit will bring it up to 60 PSI or more.\u003c\/p\u003e\u003c\/details\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;\"\u003eDoes the pump switch itself off?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eOnly with the GrowMax Float Valve Kit fitted in your storage tank. The float valve stops water production when the tank is full, the pressure switch senses it and cuts the pump's power. Without it, switch the pump off yourself — a DC pump left running against a closed system can burn out.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWorks Well With\u003c\/h3\u003e\n\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\n\u003ca href=\"\/products\/growmax-maxquarium-000ppm-r-o-filter-unit-500-l-day\" 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-growmax-maxquarium-000ppm-r-o-filter-unit-500-l-day-33051505655992.jpg?v=1785315725\u0026amp;width=160\" alt=\"GrowMax Maxquarium 000PPM RO Filter Unit\" 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 Maxquarium 000PPM RO Filter Unit\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eOne of the two RO units this kit is made for\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/growmax-water-high-flow-booster-pump-kit\" 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-growmax-water-high-flow-booster-pump-kit-38373340741847.jpg?v=1785293062\u0026amp;width=160\" alt=\"GrowMax Water High Flow Booster Pump Kit\" 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 Water High Flow Booster Pump Kit\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eThe kit to choose for a Mega Grow 1000\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\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;\"\u003eSpare RO tubing for the feed line\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"GrowMax","offers":[{"title":"Default Title","offer_id":53931121246474,"sku":"HYD-GRO3-003-01","price":96.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/growmax-water-booster-pump-kit-1.jpg?v=1792296143","url":"https:\/\/hydrocropshop.co.uk\/products\/growmax-water-booster-pump-kit","provider":"Hydro Crop Shop","version":"1.0","type":"link"}