Growmax Water Tubing for Reverse Osmosis 1/4", 3/8" and 1/2" – Connection Tubing for Filtration Systems

Growmax Water Tubing for Reverse Osmosis and Filtration: The Connection That Cannot Fail

The Growmax Water reverse osmosis tubing is the flexible connection tubing that links the different components of your system: the mains inlet, filter housings, membrane, storage tank, reject line, and purified water outlet. It is an inexpensive consumable on which the entire system depends: undersized or deteriorated tubing causes leaks, pressure drops, and reduced production.

Available in the three standard sizes of the Growmax Water quick-connect system, in several colors so you can visually identify each line at a glance.

Which size do I need?

• 1/4" (blue or black, 10 m roll): the most common size. This is the size used for the purified water and reject lines in household and cultivation equipment such as the Grow MiniMax 75, the Power Grow 500, or the Maxquarium 000 PPM.
• 3/8" (blue, 10 m roll): for high-flow equipment, where a larger section prevents the line from being restricted. Standard on the Mega Grow 1000 and in systems with the Max Pump 700.
• 1/2" (white, 5 m roll): the largest size, for feed and fill lines in high-production equipment such as the Grow Max 3000 L/day.

Color does not affect performance: it helps prevent confusing the purified water line with the reject line as the system expands.

Special-Order Item

The 10 m roll of 1/4" blue tubing (ref. 422115) is a special-order item. It is not always immediately in stock: it is ordered from the manufacturer upon receipt of your order. If you need it urgently, check availability with us before purchasing, or consider the 1/4" black version, which serves exactly the same purpose.

Installation

All Growmax Water equipment uses push-fit quick connectors: simply make a clean, perpendicular cut in the tubing and insert it fully into the connector. A diagonal cut or burrs are the leading causes of leaks. Always leave some slack in the tubing runs so that the tubing is not under tension, and avoid tight bends that reduce the internal diameter.

Remember: tubing and filters are not the same

Tubing transports water; filters treat it. If your problem is chlorine and sediment, a carbon filter such as the Eco Grow 240 L/h, the Garden Grow 480 L/h, the Super Grow 800 L/h, or the Pro Grow 2000 L/h is sufficient: they remove chlorine but do not lower the EC. If your problem is high EC, you need reverse osmosis. And if you want to achieve 000 ppm, add a deionization kit.

System Operating Conditions

Growmax Water household and commercial reverse osmosis systems operate at 25°C, with a minimum pressure of 3 kg and a maximum of 6 kg (optimal 4 bar), a reference water of 500 ppm TDS, and a reject ratio of approximately 2:1. Do not exceed 6 kg of pressure in the line: this is the operating limit for the tubing and quick connectors.

Related Products

• Growmax Water Spare Parts and Filters.
• Reverse Osmosis Pressure Pump.
• 10" and 20" Deionization Kits.
• High Pro Industrial Reverse Osmosis and GMP-S Industrial Reverse Osmosis.

At GrowIndustry we only work with proven quality products and trusted brands.

Every item goes through a check before shipping to make sure it arrives in perfect condition and ready to use.

Your satisfaction is our priority.

1. Identify the size used by your equipment: 1/4" in most home reverse osmosis systems, 3/8" or 1/2" in higher-flow systems.
2. Measure the actual length needed, allowing a little slack so that the tubing is not under tension or forms tight bends.
3. Cut the tubing with a sharp utility knife or tubing cutter, always cutting perpendicularly and leaving no burrs.
4. Insert the tubing fully into the quick connector until it stops, then pull gently to check that it is securely gripped.
5. Use different colors for the product water line and the waste line: this will help you avoid mistakes during future maintenance.
6. Open the water supply slowly, check each connection, and ensure there are no leaks before leaving the equipment running unattended.