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White GrowoniX EX400 RO filter system with dual canisters and pressure gauge.
GrowoniX EX400 400 GPD reverse osmosis filter with two cartridges and a pressure gauge.
GrowoniX filter flow rates chart, showing gallons per day vs. water pressure for different filter models at varying temperatures.
White GrowoniX EX400 RO filter system with dual canisters and pressure gauge.
GrowoniX EX400 400 GPD reverse osmosis filter with two cartridges and a pressure gauge.
GrowoniX filter flow rates chart, showing gallons per day vs. water pressure for different filter models at varying temperatures.

GrowoniX EX400 400 GPD Reverse Osmosis Filter

Official GrowoniX Dealer Model: GOEX400
$442.30 USD$347.69 USD$442.30 USD
 $442.30 USD
starting from 0% interest financing from /mo.

Payment Options

Options:Pay in Four, Pay Monthly
Amount:Up to $1,500 (Pay in 4)
Up to $10,000 (Monthly)
Schedule:Bi-weekly to Monthly
Term:6 weeks, 12 or 24 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Finance up to:$4,000
Must apply on a desktop device.
Schedule:Flexible
Term:Up to 36 months
Interest:Processing fee + interest
Lease-to-Own?Yes
Amount:$500 to $10,000
Looking to finance equipment under your corporation? Learn more about Business Financing
  • Produces 400 gallons of pure reverse osmosis water per day at 17 gallons per hour
  • Uses a 2:1 water efficiency ratio to reduce source water waste during purification
  • Comes with liquid-filled stainless steel gauges for monitoring line pressure
  • View More Details

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VOLUME PRICING

Commercial & Bulk Purchasing

We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.

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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are upgrading your water supply because your current baseline has high mineral salts that score your irrigation lines.
  • You are looking to streamline your reservoir management because your crop development is stalling out from poor water quality.

What We Found

  • The 2:1 ratio is genuinely helpful for keeping your waste costs down compared to the older systems we used to run.
  • We really value the manual flush kit because it actually saves the membrane life when you stay on top of the buildup.

What Users Say

  • Operators who installed this system report that they stopped seeing calcification on their downstream emitters entirely.
  • Users who previously struggled with high sediment loads say that the washable filter makes maintenance much faster.

GrowoniX EX400 400 GPD Reverse Osmosis Filter

Untreated baseline water lines containing high mineral salts, chemical compounds, and thick sediment loads regularly halt crop development and score sensitive downstream irrigation equipment. The GrowoniX EX400 Reverse Osmosis Filter resolves these water management issues by producing a dependable 400 gallons per day—or 17 gallons per hour—of pure RO water. Engineered with highly efficient cold-water membrane technology, this durable system operates at an impressive 2:1 system ratio to maximize water savings at an accessible price point. The structural framework relies on an electrogalvanized powder-coated steel bracket housing a washable, reusable high-flow pleated sediment filter alongside an Eco Green coconut carbon block. If your facility requires a different form factor, the EX400 Tall offers the same reliable output in a vertical configuration. Equipped with robust liquid-filled stainless steel pressure gauges, a mechanical auto-shutoff valve, and a manual flush kit to purge out pollutants, this portable setup gives cultivation facilities an uncompromised, perfectly clean nutrient baseline right out of the box.

Features

🚰
400 GPD Pure Output

Delivers a consistent 17 gallons per hour stream, bridging the gap between the EX200 and the high-capacity EX1000.

🔄
Efficient 2:1 System Ratio

Provides impressive, industry-leading eco-efficiency by minimizing source drain waste during active purification cycles.

🧼
Reusable Sediment Treatment

Features a high-flow pleated sediment filter element that is completely washable and reusable for extended lifetime tracking.

📊
Liquid-Filled Gauges

Premium 2.5-inch stainless steel liquid-filled pressure gauges give clear visibility into system line pressures.

🧼
Manual Membrane Flush Kit

Allows operators to actively purge scale and environmental pollutants, significantly extending the service life of internal membranes.

How To:

System Flushing Instructions:

System Plumbing Connections:

What's Included

Specifications

Specification Value
Permeate Flow GPD 400 Gallons Per Day
Permeate Flow GPH 17 Gallons Per Hour
System Ratio Baseline 2:1 System Ratio
Nominal Salt Rejection % 96%
Minimum Feed Flow Rate 0.83 GPM
Feed Pressure Operating Range 45 psi - 80 psi
Max Feed Water TDS Limit 2,000 ppm
Feed Water Temperature Limits 40°F - 90°F (4.44°C - 32.2°C)
Ambient Temperature Limits 40°F - 115°F (4.44°C - 46.11°C)
Max SDI & Turbidity Ratings SDI < 3 / Turbidity 1 NTU
Continuous pH Range Allowed 5 - 11
Inlet Plumbing Connection 3/8" Tube Line
Outlet Permeate Connection 1/4" Tube Line
Concentrate Drain Connection 1/4" Tube Line
Physical Dimensions (L x W x H) 14" x 7" x 18"

FAQ

What total processing volume can the Eco Green coconut carbon filter handle? +

The standard pre-treatment carbon component is rated to clear up to 8,000 total gallons of chlorine or chloramine before needing replacement. This maps out to roughly 3,000 gallons of pure reverse osmosis water output at a 2:1 operating ratio.

Can I upgrade the GrowoniX EX400 to eliminate chloramines or heavy iron from a well? +

Yes, if your facility tap water contains heavy chloramines or well water impurities, you can upgrade the setup. Simply replace the standard element with a GrowoniX KDF85 catalytic carbon mix filter to neutralize heavy metal loads and bacteria.

Is there a way to boost daily gallon production if my facility demands grow? +

You can connect a GrowoniX booster pump directly to the water intake line. This add-on safely raises system input values up to 80 PSI, increasing your overall pure daily output volume up to an impressive 450 GPD.

How often does the high-flow pleated sediment filter require total replacement? +

Unlike disposable fiber filters, this specialized sediment element is completely washable and reusable. You simply pull it out to rinse away collected debris whenever your incoming line pressure starts dropping.

What plumbing connection line sizes are integrated into this filtration chassis? +

The structural housing uses a 3/8" tube fitting for the raw feed line intake port. Purified product water and concentrated drain waste are both handled via reliable, standardized 1/4" tube pathways.

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Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

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