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GrowoniX EX400 400 GPD reverse osmosis filter with two tall white filter housings and a pressure gauge.
White GrowoniX EX400 Tall Reverse Osmosis Filter, 400 GPD.
GrowoniX EX400 Tall Reverse Osmosis Filter 400GPD flow rates chart: Gallons per day vs. water pressure (PSI) with/without pump.
GrowoniX EX400 400 GPD reverse osmosis filter with two tall white filter housings and a pressure gauge.
White GrowoniX EX400 Tall Reverse Osmosis Filter, 400 GPD.
GrowoniX EX400 Tall Reverse Osmosis Filter 400GPD flow rates chart: Gallons per day vs. water pressure (PSI) with/without pump.

GrowoniX EX400 Tall 400 GPD Reverse Osmosis Filter

Official GrowoniX Dealer Model: GOEX400-T-CONFIG
$519.76 USD$397.69 USD$519.76 USD
 $519.76 USD
starting from 0% interest financing from /mo.

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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
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  • Produces up to 400 gallons of purified water per day for consistent supply.
  • Operates at a 2:1 ratio to prioritize water efficiency during daily cycles.
  • Includes a manual flush kit and liquid-filled gauges for precise system maintenance.
  • 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 fluctuating mineral levels in your tap water create inconsistent nutrient uptake in your plants.
  • You are moving away from manual water purification because the constant manual labor of hauling and monitoring portable jugs drains your daily production time.

What We Found

  • The reusable sediment filter is a smart touch because you can just rinse off the debris instead of hunting for replacements every single month.
  • We like that this unit uses a tall bracket design, as it keeps the gauges at eye level for quick status checks without you having to crouch down.

What Users Say

  • Users who installed this system say their downstream irrigation lines stopped clogging with scale buildup, which saved them from constant pump repairs.
  • Operators who switched to this unit report that they spend significantly less time adjusting their nutrient pH levels because the baseline water is now reliably pure.

GrowoniX EX400 Tall 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 Tall 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. For smaller operations, the GrowoniX EX200 offers similar efficiency, whereas the GrowoniX EX1000 is better suited for high-volume needs. 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 elongated, taller electrogalvanized powder-coated steel bracket housing a GrowoniX sediment filter alongside an Eco Green carbon block for extended pre-filtration contact time. Equipped with robust 2.5-inch 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 to feed small-to-midscale cultivation water storage configurations.

🔄
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
Filter Housing Size Tall
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 29"

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 Tall 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 the GrowoniX KDF85 catalytic carbon mix 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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