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High flow reverse osmosis membrane 150 GPD (500 L/day) designed to obtain pure water with stable flow in indoor cultivation. Produces up to 20 L/h (approx. 500 L/day), reduces salts and heavy metals by up to 95% and removes chlorine by up to 99%. Compatible with Power Grow, Mega Grow and Maxquarium from Growmax Water.
Available at Hydroponics Blanes, online grow shop with discreet shipping and advice from a trusted Grow Shop.

The High Flow Reverse Osmosis Membrane 150 GPD (500 L/day) from Growmax Water provides a controlled starting point for preparing consistent nutrient solutions.
The semipermeable element works with adequate mains pressure to generate a low EC/TDS permeate and a reject stream that carries away impurities.
This minimizes salt buildup in substrates, pipes, and irrigation accessories, extends the lifespan of pumps and drippers, and protects beneficial microorganisms sensitive to chlorine.
The output of up to 20 L/h allows you to supply tanks for daily irrigation, substrate washing, or preparation of stock solutions, maintaining uniformity between batches. Installation is straightforward in Power Grow, Mega Grow, and Maxquarium systems, with no complex adaptations needed.
Durability depends on the quality of the feed water and the volume produced; it is advisable to replace when the EC of the permeate rises compared to initial values or when the effective flow rate drops noticeably.
Integrated into an irrigation system with tank, pump, and hoses, this membrane provides stability, repeatability, and time savings when watering indoor crops.
A predictable base water simplifies nutrition in indoor growing. With this membrane, the contribution of carbonates and contaminants that distort recipes is reduced, allowing Ca/Mg and micronutrients to be adjusted more precisely. Fewer precipitates mean cleaner lines, stable drippers, and less maintenance on tables, trays, and conduits. The 150 GPD flow rate supplies everything from home grow tents to semi-professional rooms, ensuring availability for scheduled irrigation and continuous tank refills.
For an efficient setup, it is advisable to combine with sediment and activated carbon prefilters in good condition, a pressure gauge to check inlet pressure, a properly sized restrictor, check valve, and TDS/EC meter to audit the permeate. In the irrigation circuit, graduated tanks, submersible pumps with appropriate flow, 8–12 mm hoses, in-line filters, and a flow meter are recommended to standardize liters per plant. This combination integrates the membrane into a robust, scalable, and easy-to-maintain irrigation system for precise indoor crop watering.
Operational tip: write the installation date, initial TDS, and usual pressure on a label. This data speeds up diagnostics and replacement decisions.
An investment that translates into stable recipes, lower maintenance costs, and fewer incidents in the lines. At Hydroponics Blanes you will find packs with prefilters and other irrigation accessories, as well as special offers in the online grow shop. Check availability and conditions for discreet shipping throughout Spain and the EU.
Buy at Hydroponics Blanes, a trusted Grow Shop with support to size flow rates, compatibility with Growmax Water equipment, and proper integration into the irrigation system. Technical advice to choose meters, pumps, and hoses, and to plan indoor crop watering routines with optimized base water.
The High Flow Reverse Osmosis Membrane 150 GPD (500 L/day) provides consistent starting water, reduces chlorine, salts, and heavy metals, and facilitates predictable nutrient mixes in grow tents and rooms. A key piece for maintaining batch uniformity, improving root health, and protecting pipes, pumps, and drippers.
A strategic choice for those seeking absolute control of base water: the High Flow Reverse Osmosis Membrane 150 GPD (500 L/day) delivers sufficient flow for daily preparations, simplifies fine-tuning of fertilization, and integrates with the rest of the irrigation accessories available at Hydroponics Blanes —online grow shop with discreet shipping—, reinforcing the reliability of the irrigation system in indoor growing.