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The Leader In Recirculating Deep Water Culture | Hydra Unlimited

Free Shipping On All System Orders In The Continental U.S.A.!

HydraMax 4 bucket, 2 Row Home RDWC System

SKU: HK-04-2-24 Categories: ,

HydraMax 4-Bucket Home RDWC System
Upgrade your grow with the chiller-ready HydraMax 4-Bucket Home System WITHOUT the need for air-stones or air-pumps, or a separate reservoir. This system was designed to be adaptable to a chiller system to help regulate water temps, it does not come with a chiller unit.

This system is a media-less recirculating deep water culture hydroponic system that brings our commercial-grade technology and higher grow yield opportunities to your home, allowing for up to 25-30% increased yields vs. other grows methods.

Our kits are all designed and made in the U.S.A. with U.S.A. parts, we want your system and all the parts to last for years and decades, not months. HydraMax systems stand out with our advanced Venturi circulation for powerful oxygenation and nutrient delivery, and patented parallel flow tech for streamlined circulation, cleaning, draining, dosing, and homogenization – allowing simple tasks to be done in minutes, not hours!

Our company stands out for our dedication to our growers and the industry, as well as our dedicated sales, customer service, and parts support teams. Start today and expect to streamline your processes, maximum your yields, and crush your grow goals with an easy-to-use, next level hydroponic system.

$659.99

Estimated delivery by 06/09/2026

Add Additional Neoprene Collars

  • Click Images To Add Packs *

    3.5" Neoprene Collar – 10 + $29.95
    3.5" Neoprene Collar – 150 + $441.93

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Important Shipping Notice: Expedited shipping only applies to parts and fittings. All HydraMax Professional #4-32 bucket systems ship in 7 days or less.

Description

Chiller-Ready, Tent-Ready, Cultivator Approved
Upgrade your grow with the HydraMax 4-Bucket Home System. This chiller-ready, RDWC hydroponic system brings professional-grade technology to your home at an unbeatable price. With advanced Venturi circulation for powerful oxygenation and nutrient delivery, it's designed for maximum yields in a compact space WITHOUT the need for air-stones or pumps!

Cultivate With Confidence, No Reservoir Needed
Take full control of your grow environment, optimizing water temperature and root health for rapid, robust growth. Enjoy a more organized grow environment and more floor space with an optimized system design; low-profile, no-leak quick connection plumbing, and no reservoir needed! Due to the balance between Venturi circulators and the unique design of our drain orifices, this creates complete stability of the system. Spend minutes dosing, not hours!

Industry Leading Product-Yields
Many of our Home, Professional, and Commercial growers have found 25-30% increases in yields on average once they get familiarized with our HydraMax systems. Overall, our RDWC systems provide dramatic decreases in pests and plant loss failures through plant disease. HydraMax allows for growers to efficiently monitor and adjust for their plants along their grow cycles, and our entire recirculation method allows for powerful oxygenation and nutrient delivery, helping create one of the industry leading systems available on the market!

4-Bucket Home VS. 4-Bucket Professional
While the HydraMax 4-Bucket Home system and the 4-Bucket Professional system are chiller ready, the 4-Bucket Professional system is meant for growers that need further customization, are looking to build out automated dosing and watering capabilities,  and for those that plan on scaling their systems up at a later date. The 4-Bucket Home system is one of our most affordable systems, and as such, is a stand alone system, and non-customizable.

This Recirculating Deep Water Culture System includes:

• Four 8-Gallon Buckets w/ legs
• 4 Lids w/ inspection port & cover
• 4 Venturi Circulators
• Complete Qwik-Lok Plumbing Assembly (all necessary hoses and connectors)
• 1 Heavy Duty Danner 9.5 Pump, 1 Pump stack
• Four 5.5" Root Halo snap-in media-less netpots, each with neoprene collar insert.
• 1-Year Warranty
• Recommended chiller is a 1/10HP unit (Chiller does not come with system).

 

*The following items are required for installation but are not included: Teflon Tape, Scissors, Pliers or Wrench

**Important Shipping Notice: Expedited shipping only applies to parts and fittings – All HydraMax Professional systems ship in 7 days or less by standard ground service.**

Additional information

Weight 42 lbs

About Us

World-Class Engineering, Product Quality, Support, and Grow Results

With an extreme dedication to quality, innovation, and plant-centric results, our hydroponics systems stand as pioneers in the industry with proven results. Hydra Unlimited is proud to be a vertically integrated company, meaning all products are designed, engineered, tested, manufactured, and shipped directly by our organization in Michigan, U.S.A.

Elevate your growing endeavors with HydraMax or Hydra Tower – where amazing grows meet simplicity and where plant quality meets efficiency. Embrace the future of cultivation and unlock your garden's true potential with Hydra Unlimited.

Instructions

Installation Manual

Installation Manual (Pre-2023)

HydraMax Brochure

Product FAQs

Tools and Grow Guides

Deep Water Culture Education

What Growers Have To Say

Explore our Community

Check out our new blog article on some of the top hydroponic questions we get asked!
🔽 Link can be found in the description below or right on our website's main blog page.

💚 Whether you're just getting started or looking to upgrade your setup, understanding the fundamentals can make all the difference. Below, we break down the most common hydroponic questions into a clear, no-fluff guide to help you grow faster, cleaner, and more efficiently.

#plantlife #growwithhydra #growyourownfood #companionplanting
1 1
Really happy to see the crew at @wzzm13 enjoying their 16-plant Hydra Tower. They've been doing great with Kale and will soon be switching over to trying out cherry tomatoes! Cheers! 🥳 

#growwithhydra #hydraunlimited #hydra #hydroponics #gardening
4 1
👋 Say goodbye to hours of scrubbing! 

We know cleaning your system is the hardest part of the grow cycle, which is why we designed the Hydra Tower with your time in mind. All components are 100% dishwasher safe. Just load them up, press start, and get back to doing what you love, growing awesome plants and enjoying the good life! 

Ready for zero-hassle maintenance and industry leading plant growth? 💧 Check out our Vertical Hydroponic Garden today - the Hydra Tower!

#HydraUnlimited #HydraTower #Hydroponics #IndoorGrowing #GrowWithHydra #HydroponicFarming
10 2
✅ One of the things that makes us stand out vs. other hydroponic systems on the market... is that ALL of our hydroponic systems are designed, engineered, tested, manufactured, assembled, shipped, & supported right here in the USA by hard working American families, and as a family-owned business.

👋 We appreciate the support and look forward to providing you with an excellent system and stellar customer service throughout your years of successful growing!

#growwithhydra #USAmade #hydroponicsystems #sustainableliving #homegrown
6 1
Real seed freedom. Real performance. 🌱

Hydra Tower delivers precision hydroponic power with no subscriptions, no restrictions, and no gimmicks — just explosive growth backed by 45 years of fluidic engineering expertise.

#HydraUnlimited #HydraTower #Hydroponics #GrowYourOwn #GrowWithHydra
2 1
"This system set up in minutes and is very easy to operate. To date, growth rates are excellent, and the tower has proven very reliable. Small space, big fun!!"

The flower buds are forming on this customer's heirloom jalapeno plants in the Hydra Tower for their first run in their new vertical hydroponic garden!

#growyourown #foodfreedom #nopesticides #sustainableliving #homegrown
6 1
🌿 Beyond herbal medicine, we love encouraging our growers to experiment with their hydroponic systems. Here we see a past grow for that a non-profit was trying out, utilizing a 12-bucket HydraMax RDWC (Recirculating Deep Water Culture) system, putting in the work on a pepper and cherry tomato trial run.

🍅 🥒 Their next grow, they dialed things in, and produced 14 foot cucumbers and almost 9ft. tall tomato plants, creating TONS of produce!

#hydroponics #growwithhydra #plantlife #recirculatingdeepwaterculture
19 1
Check out our new blog article on companion planting in Vertical Hydroponic Gardening!
🔽 Link can be found in the description below or right on our website's main blog page.

💚 Companion planting has been used in traditional gardening for centuries, but its benefits can also be applied to modern hydroponic systems like vertical hydroponic gardening systems, learn about which plants work together and why it can help you in your grow journey!

#plantlife #growwithhydra #growyourownfood #companionplanting
3 1
✨ Another 5-Star Hydra Unlimited Review!

#indoorgardenindoorgarden #hydroponicshydroponics #hydratowerhydratower #growwithhydragrowwithhydra
2 0
38 days from seed to salad. 🥗 The tower is looking prime and ready for harvest. Doesn't get much fresher than this.
10 1
✨ Another 5-Star Hydra Unlimited Review! We had a chance to speak with Tim M. and he has been absolutely amazed by the phenomenal growth his new Hydra Tower has produced!

Never having tried hydroponics before, he's enjoying the journey and success 🧙 

His setup for success:
✔️ 16-plant Hydra Tower
✔️ Grow tent, LED lights, & a fan

#indoorgarden #hydroponics #hydratower #growwithhydra
0 1
Patience pays off when it comes to growing your own fruiting veggies! 🍅🥒🌶️ Wondering what the timeline looks like for tomatoes, peppers, and cucumbers in your Hydra Tower? Here is exactly what to expect:
 
🌱 **Days 0-14 (Germination):** Fruiting seeds take a little longer to wake up! You'll see those tiny first leaves emerge within the first two weeks. 
🌿 **Days 15-40 (Seedling Establishment):** Serious work is happening below the surface. Plants are building robust root systems to support the heavy fruit to come! 
🪴 **Days 41-70 (Vegetative Growth):** Boom! 💥 Get ready for rapid vertical and bushy growth. Watch as they build thick stalks and wide branches. 
🍅 **Day 71+ (Flowering & Fruiting):** The magic stage! Blossoms open up, and once pollinated, they swell into delicious, harvestable fruit. With good care, they'll keep producing for weeks or even months!
 
What's your favorite fruiting plant to grow at home? Let us know in the comments! 👇 
 
#HydraTower #Hydroponics #IndoorGarden #GrowTomatoes #UrbanFarming #FruitingPlants #GardenTimeline #HydroponicTomatoes #GrowYourOwnFood
0 0
From seed to salad in under two months! 🌱🥗 Ever wonder what the growing journey looks like in your Hydra Tower? Here's exactly what you can expect when growing leafy greens and herbs: 
 
💧 **Days 0-7:** The magic begins! Seeds sprout and show off their first tiny leaves. 
🌿 **Days 8-21:** Roots stretch down to reach the Hydra Tower's cascading water, establishing a strong base. 
🥬 **Days 22-45:** Growth explosion! Watch your tiny seedlings rapidly transform into lush, leafy plants. 
✂️ **Days 46-60+:** Harvest time! Cut whole heads or use the "cut-and-come-again" method for weeks of fresh, continuous greens. 
 
Growing your own food has never been this easy or rewarding. No soil, no weeding, just fresh greens right at home! 🏡
 
✨ What are you planning to grow first in your Hydra Tower? Let us know in the comments! 👇 
 
#HydraTower #Hydroponics #GrowYourOwnFood #IndoorGarden #UrbanFarming #LeafyGreens #PlantJourney #HarvestTime #HydroponicSystem
4 1
🚨 4/20 SALE – TODAY ONLY 🚨
Hydra Unlimited is turning up the volume. Save 20% off all HydraMax Professional Systems and bring commercial-grade growing power straight to your grow space!

Shop now and elevate your grow!  Promo code in the comments below ⬇️ 

#420sale #hydroponics #save20 #gardening
4 1
Be sure to follow our new page @hydra_tower and check out our new systems!

🌞Today we're showing off a couple of our Hydra Towers in the front of our headquarter's front lobby!

Have questions? Let us know in the comments below or feel free to DM us and we'll be happy to help you out!

#growwithhydra #plantlife #hydraunlimited #verticalgarden
6 0
@grozinehydroponicsmag

"The 32 site HydraTower is at home in the backyard greenhouse. Set up was a breeze.

Easy operation and lots of planting sites in a relatively small footprint have us excited about starting our seeds in this vertical garden! 🌱💦"

#verticalgarden #hydroponic #grow #hydratower #growyourfood
12 3
✅ Why is the supply hose on the OUTSIDE of our Hydra Towers?
 
Great question, and the answer is simple: performance beats pretty every single time.
While other systems hide everything inside to look
9 0
@grozinehydroponicsmag is setting up some new family vertical gardens 🌱Kids LOVE getting involved with our grow towers! Thanks for the awesome feedback!

"This 16-site HydraTower is up and running, with a 32-site system going into the greenhouse next. Seeds are in for compact jalapeños—now the fun begins.

Clean design, easy setup, and some very clever water movement built in to keep the nutrient solution highly oxygenated. Excited to see how these perform. 🌶️"

#growwithhydra #Hydroponics #VerticalGarden #GrowYourOwn #IndoorGrowing
27 1
A highly respected and long-time RDWC Commercial Cultivator on the East Coast hit us up last week to get a quote on Root Halos. They are now proud owners!

One of the many benefits they listed was the way the Root Crown forms through the basket with ease, no longer pushing the plant up and risking support. 

They compared them to their traditional basket over the course of a few full cycles. They noted decreased man hours in fixing plant support, as well as plant removal and cleaning time. 

In times like these, it's important to be lean and efficient, and these guys are on the right track! Hit us up for a quote today or head over to hydraunlimited.com to see why these net pots are king. 

#hydroponics #hydramax #rdwc
8 0
The kids are asleep and mama is getting it done 💪🏼😤
Looking forward to seeing this new 32-plant @hydra_tower get started this month!!

Check out @boulterfamilyfarm to follow her homestead and new hydroponic journey!

🌻The Hydra Tower Vertical Hydroponic Garden is available in a 16 or 32-plant tower, enjoy free shipping and 20% off now through end of March at checkout! 

#plants #homestead #plantcore #hopecore #greenhouse
13 2
Secret Link

Plant the Seed & Start Growing today! enjoy the spring hydra tower sale.

GET 20% OFF!

Automatically take off 20% on any vertical hydroponic garden order at checkout - no signup required, just amazing results.