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Rain 18 Pot 2 Row 15L Compact Header Kit: 18 grey square pots in two rows, connected by green/black tubing.
RAIN 18 Pot 2 Row 15L Remote Header Kit with 18 grey modules arranged in two rows, connected to a header unit.
Diagram of a RAIN 18 Pot 2 Row 30L Compact Header Kit, with 18 grey square modules in two rows, connected by pipes.
RAIN 18 Pot 2 Row 30L Remote Header Kit: 18 grey square pots in two rows, connected by green tubing.
Rain 18 Pot 2 Row 15L Compact Header Kit: 18 grey square pots in two rows, connected by green/black tubing.
RAIN 18 Pot 2 Row 15L Remote Header Kit with 18 grey modules arranged in two rows, connected to a header unit.
Diagram of a RAIN 18 Pot 2 Row 30L Compact Header Kit, with 18 grey square modules in two rows, connected by pipes.
RAIN 18 Pot 2 Row 30L Remote Header Kit: 18 grey square pots in two rows, connected by green tubing.

Alien Hydroponics RAIN System - 18 Pot 2 Row Kit

Official Alien Hydroponics Dealer Model: BD100-5218C
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 $3,054.67 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
  • Automates feeding for 18 plants across a dual-row configuration
  • Copper-plated covers and Dual-Flow fittings stop roots from clogging lines
  • Fits mid-sized rooms with pot options ranging from 15L to 30L volumes
  • View More Details
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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are automating your top-feed cycles because hand-watering 18 pots results in uneven growth and salt buildup.
  • You are switching to rain-style delivery because your current drippers clog and leave dry pockets in the medium.

What We Found

  • The silver piping actually makes a difference in summer by keeping reservoir temps from spiking in the tent.
  • We like the threaded fittings because they stay leak-free without the mess of PVC glue during the initial setup.

What Users Say

  • Users who moved from hand-feeding say their canopy height is finally uniform across the entire 18-pot layout.
  • Growers tell us they stopped seeing nutrient lockout after the rain lids started flushing away old salt deposits.

Alien Hydroponics RAIN System - 18 Pot 2 Row Kit

Tired of inconsistent watering and nutrient distribution holding back your plants? The Alien Hydroponics RAIN System - 18 Pot 2 Row Kit is the solution. This advanced top-feed system automates feeding by perfectly mimicking natural rainfall, ensuring every plant gets exactly what it needs for explosive growth and optimal health.

Designed for seasoned growers who demand reliability, this mid-sized system eliminates the guesswork. The unique design flushes residual salts, prevents root rot, and avoids nutrient lockout, allowing you to use various growing mediums with confidence. This kit is part of the versatile Alien Hydroponics lineup, which also includes innovative setups like the AERO System for aeroponic enthusiasts. With a simple, no-glue assembly, you can set up and maintain your garden effortlessly, regardless of your experience level.

Please note: This kit requires a nutrient reservoir, which is not included. We highly recommend pairing it with a compatible tank like the Alien GardenTank 70 Gallon reservoir to complete your setup.

Features

🌧️
Mimics Natural Rain

Delivers water and nutrients evenly for optimal absorption and healthier plants.

🧠
Automated Rain Brain

Ensures precise and consistent nutrient delivery, keeping your feeding schedule on time, every time.

🛡️
Root Protection

Copper-plated drain covers and Dual-Flow™ fittings prevent roots from clogging pipes.

🌡️
Heat-Resistant Design

Heat-reflective silver piping maintains cooler solution temperatures for healthier roots.

💧
Efficient Drainage

A raised drainage grid and sloped base prevent waterlogging and promote aeration.

🔧
Easy Assembly

Threaded fittings and snap-on pipes allow for a quick, glue-free setup and easy maintenance.

🌱
Medium Versatility

Effectively flushes salts, making it compatible with a wide variety of growing mediums.

📏
Scalable System

Easily expand or reconfigure your setup. Kits are available up to 36 pots to fit your space.

What's Included

  • 1x DRAIN Pump Pipe Adapter
  • 1x Pressure Water Pump 20
  • 1x Cycle Timer
  • 1x AERO/RAIN Header Pot Complete 20L
  • 18x AERO/RAIN Pot 15L
  • 1x Silver Lid
  • 18x RAIN Lid Cover
  • 18x RAIN Lid
  • 36x RAIN Lid Clip
  • 1x Header Pot Blank
  • 36x Pot Stand for 15L Pot
  • 18x RAIN Fabric Pot 15L
  • 18x Drain Cover - Copper
  • 2x Elbow 50mm Barbed
  • 2x Elbow 50mm Dual Flow
  • 17x Tee 50mm Dual Flow
  • 19x Washer 50 X 64mm
  • 19x Nut 50mm Dual Flow
  • 8x Clamp Size 2
  • 2x Valve 16mm Green
  • 2x Plug - 16mm
  • 36x Tee 16mm - 4mm
  • 18x Pot Clip 16mm
  • 2x Elbow 19mm Barbed
  • 2x Elbow 25mm Barbed
  • 1x Siphon Tee 19mm Fitting
  • 1x Siphon Tee 25mm Fitting
  • 11x Pipe 16mm Silver Bulk by Meter
  • 4x Pipe 19mm Black Bulk by Meter
  • 4x Pipe 25mm Blue Bulk by Meter
  • 8x Pipe 4mm Green Bulk by Meter
  • 9x Pipe 50mm Silver 100cm Piece
  • 1x Wrench 50mm
  • 1x Pipe Cutter 50mm
  • 1x RAIN Instructions
  • 1x JET-STREAM DRAIN Water Pump 1100GPH
  • 1x JET-STREAM DRAIN Water Pump Power Adapter

Specifications

Specification 15L Pot Version 30L Pot Version
Number of pots 18 18
Number of rows 2 2
Min. Assembled Size (Compact Header) 139" L x 28⅜" W 167⅜" L x 34⅝" W
Max. Assembled Size (Compact Header) 222⅞" L x 37" W 274¾" L x 46⅛" W
Min. Assembled Size (Remote Header) 139" L x 28⅜" W 166⅜" L x 34⅝" W
Max. Assembled Size (Remote Header) 262¼" L x 37" W 314⅛" L x 46⅛" W
Water Pumps Included JET-STREAM DRAIN 1100GPH, Pressure Water Pump 20 JET-STREAM DRAIN 1100GPH, Pressure Water Pump 20
Recommended Min. Reservoir (Not Included) 70 Gallons / 280 Liters 70 Gallons / 280 Liters

Setup and Maintenance

System Setup Steps:

1. Prepare Pots

Attach the necessary fittings to the pots.

2. Connect the System

Use piping to connect the pots and the header pot to establish the recirculating network.

3. Install Air System

Set up the air pump and connect it to the air stones in the pots.

4. Integrate Pumps

Install the water pump(s) for recirculation and chilling (if applicable).

5. Set Up Nutrient Tank

Connect the nutrient tank to the system.

6. Fill the System

Add water to the system.

Maintenance Tips:

  • Maintain a 50-75cm center distance between each pot.
  • Alien Hydro recommends a watering frequency of one minute every hour.
  • Regularly check the filter for debris.
  • Minimal cleaning is required when using mineral-based nutrients.
  • Use ROOT ROT X™ to sterilize and keep roots healthy.
  • Flush the system between crop cycles with clean water and disinfectant.
  • Inspect sprinklers to ensure proper misting and water distribution.

Compare Alien Hydroponics Systems

Feature V-System RDWC AERO RAIN EasyFeed
Hydroponic method RDWC RDWC Aeroponics Top-feed Bottom-feed
Pot sizes available 15.3 gal (58L) 5 gal (20L), 9.5 gal (36L) 4 gal (15L), 8 gal (30L) 4 gal (15L), 8 gal (30L) 2.5-8 gal (10-30L)
Expandable / Reconfigurable ✔ ✔ ✔ ✔ ✔
Customizable pot spacing 26-39" 14-30" 14-30" 14-30" 15-36"
Minimal medium required ✔ ✔ ✔ ✘ ✘
Oxygenates nutrients ✔ ✔ ✔ ✔ ✘
Fresh nutrients to every pot ✔ ✘ ✔ ✔ ✔
Doesn't require electricity ✘ ✘ ✘ ✘ ✔
Usable on uneven ground ✘ ✘ ✔ ✔ ✔
Compatible with soil or coco ✘ ✘ ✘ ✔ ✔
Can grow root crops ✘ ✘ ✘ ✔ ✔

Support & Manuals

Warranty

The ALIEN RAIN Top-Feed System is covered by a one-year manufacturer's warranty for your peace of mind.

FAQs

What growing mediums can I use with the RAIN system?+

The RAIN system is highly versatile. Because its top-feed design effectively washes away residual salts, it's compatible with a wide range of mediums, including soil, coco coir, clay pebbles, and rockwool.

How does this system prevent root rot?+

The system is engineered for excellent drainage and aeration. The raised drainage grid in each pot, combined with the automated and timed watering cycles, prevents the medium from becoming waterlogged, ensuring roots have constant access to oxygen.

Is a nutrient reservoir included with this kit?+

No, a nutrient reservoir or tank is not included. You will need to supply your own. We recommend a tank with a minimum capacity of 70 gallons (280 Liters) for this 18-pot kit.

Can I expand or change the layout of this system later?+

Absolutely. All Alien Hydroponics systems are modular. The glue-free fittings and snap-on pipes make it easy to reconfigure your layout or add more pots as your needs grow. If you require a larger setup from the start, consider the RAIN System 24 Pot Kit.

What is the difference between the RAIN and the RDWC systems?+

The main difference is the hydroponic method. The RAIN system is a top-feed drip system that mimics rainfall, making it great for various media. The Alien RDWC is a Recirculating Deep Water Culture system where roots are submerged in a highly oxygenated nutrient solution, which is ideal for soilless grows and rapid root development.

What is the recommended watering schedule?+

The manufacturer recommends starting with a watering frequency of one minute every hour. However, the ideal schedule can vary based on your plant type, growth stage, and medium. The included cycle timer allows you to easily adjust this to find the perfect balance for your garden.

Happy To Help

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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