About Us Contact Us Shipping Easy Returns Privacy Terms of Service
Skip to content
Atlantis Economy Garden 3400-4400L Underground Rainwater Harvesting System

Atlantis Economy Garden 3400-4400L Underground Rainwater Harvesting System

by Atlantis Tanks
£2,366.40
Tank Size

Notify me when back in stock

🔒 Secure Checkout
Fully Encrypted • Payment Protected
Free UK Delivery · 30 Day Easy Returns

Affordable underground rainwater harvesting system for reliable home garden water saving and irrigation.

Designed and manufactured in the UK, this system helps homeowners, landscapers, and small businesses reduce water costs and improve sustainability while maintaining garden and irrigation needs year-round.

Key Features

  • Made in the UK from high-strength, rotationally moulded polyethylene.
  • Low-profile design for a shallower excavation — up to 500mm less depth required.
  • Ribbed and curved tank body adds exceptional strength and prevents deformation.
  • Environmentally friendly installation — no concrete base required; pea-gravel backfill compatible.
  • Pre-installed PF rainwater filter removes leaves and debris with simple maintenance.
  • Calpeda GXRM stainless steel submersible pump for reliable water pressure to hoses and irrigation.
  • Rodent guard and pump turret for secure and hygienic water delivery.
  • 10-year warranty for peace of mind and long service life.

System Includes

  • Underground tank: 3400L or 4400L
  • GXRM stainless steel submersible pump
  • PF filter with calmed inlet
  • Pump turret and lifting chain
  • Rodent guard
  • Optional telescopic neck and lid (supplied on 10,000L model)

Installation & Use

The Atlantis Economy range is designed for straightforward, environmentally friendly installation using a pea-gravel backfill — eliminating the need for concrete. The low-profile shape makes it particularly suitable for areas with high water tables or restricted digging depth.

The system connects easily to garden irrigation lines, outdoor taps, or hose fittings. Collected water is filtered before entering the tank, stored securely, and pumped on demand for car washing, watering, or light commercial use.

Specs

Choosing the Right Size

  • 1,800L–2,600L: Ideal for small gardens or single-household irrigation.
  • 3,400L–4,400L: Suitable for medium gardens or regular hose use.
  • 5,200L–6,800L: Best for large gardens or light commercial applications.
  • 8,400L–10,000L: Designed for estates, landscaping businesses, and sites with heavy water demand.
Capacity Capacity Length Width Height Weight
Liters  Gallons Milliliters Milliliters Milliliters Kilograms
1,800 400 2,080 1,260 1,360 88
2,600 572 2,880 1,260 1,360
 120
3,400 747 3,680 1,260 1,360 157
4,400 967 4,510 1,260 1,360 200
5,200 1,143 2,700 2,700 1,725 240
6,800 1,495 3,420 2,700 1,725 350
8,400 1,850 3,970 2,700 1,725 ---
10,000 2,200 4,770 2,700 1,725 468

 

Description

Affordable underground rainwater harvesting system for reliable home garden water saving and irrigation.

Designed and manufactured in the UK, this system helps homeowners, landscapers, and small businesses reduce water costs and improve sustainability while maintaining garden and irrigation needs year-round.

Key Features

  • Made in the UK from high-strength, rotationally moulded polyethylene.
  • Low-profile design for a shallower excavation — up to 500mm less depth required.
  • Ribbed and curved tank body adds exceptional strength and prevents deformation.
  • Environmentally friendly installation — no concrete base required; pea-gravel backfill compatible.
  • Pre-installed PF rainwater filter removes leaves and debris with simple maintenance.
  • Calpeda GXRM stainless steel submersible pump for reliable water pressure to hoses and irrigation.
  • Rodent guard and pump turret for secure and hygienic water delivery.
  • 10-year warranty for peace of mind and long service life.

System Includes

  • Underground tank: 3400L or 4400L
  • GXRM stainless steel submersible pump
  • PF filter with calmed inlet
  • Pump turret and lifting chain
  • Rodent guard
  • Optional telescopic neck and lid (supplied on 10,000L model)

Installation & Use

The Atlantis Economy range is designed for straightforward, environmentally friendly installation using a pea-gravel backfill — eliminating the need for concrete. The low-profile shape makes it particularly suitable for areas with high water tables or restricted digging depth.

The system connects easily to garden irrigation lines, outdoor taps, or hose fittings. Collected water is filtered before entering the tank, stored securely, and pumped on demand for car washing, watering, or light commercial use.

Specs

Choosing the Right Size

  • 1,800L–2,600L: Ideal for small gardens or single-household irrigation.
  • 3,400L–4,400L: Suitable for medium gardens or regular hose use.
  • 5,200L–6,800L: Best for large gardens or light commercial applications.
  • 8,400L–10,000L: Designed for estates, landscaping businesses, and sites with heavy water demand.
Capacity Capacity Length Width Height Weight
Liters  Gallons Milliliters Milliliters Milliliters Kilograms
1,800 400 2,080 1,260 1,360 88
2,600 572 2,880 1,260 1,360
 120
3,400 747 3,680 1,260 1,360 157
4,400 967 4,510 1,260 1,360 200
5,200 1,143 2,700 2,700 1,725 240
6,800 1,495 3,420 2,700 1,725 350
8,400 1,850 3,970 2,700 1,725 ---
10,000 2,200 4,770 2,700 1,725 468

 

Shipping

Shipping is FREE on all orders to customers within the United Kingdom.


We don't want to mess around with fine print and extra charges, we like things to be simple and easy. 

Want to know about our Returns Policy? Read more here.

Order Confirmation:

As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorised your credit card for the purchase.  

As soon as we receive your order, we automatically check to confirm that Your order is in stock and available for immediate shipment. If your item is on back-order or unavailable, we will void the pre-authorisation and reach out to you via e-mail to see if alternate arrangements can be made
made.  

If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and get to work preparing your order for shipment.


Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within three business days from the date of your order.   We will send you shipping confirmation within 24 hours of your order Leaving the warehouse to the e-mail address you provided when checking out.  

If you do not receive shipping confirmation from us within four business days days since your order, feel free to follow up with us at info@eco-stride.co.uk.

International Orders:

We will happily ship our fantastic products to international customers. Due to the extremely wide variety of product dimensions, we will provide an up-to-date shipping price quote for you on request.

If you are happy with our shipping quote, we will prepare an order and payment through our ultra-secure online payment gateway.

Damages:

Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery or do not agree to accept the delivery.

If you do accept delivery you are required to immediately take photos using your smart phone or camera of the damaged packaging or products inside the packaging. 
If your item(s) do arrived damaged please send photos to info@eco-stride.co.uk. then visit our Returns page and lodge your return claim online.

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.

Here's why we think you should shop with us at Ecostride.

But first, you should definitely hear from our customers here.

  • Free Shipping UK wide. No extra charges. Ever.
  • Price Match Guarantee. Best prices online guaranteed.
  • 30 Day Easy Returns. No happy with your product, we will take it back no questions asked.
  • Great Service. We pride ourselves on the best service, anywhere.
  • Your Satisfaction Guaranteed. We handpick our products for quality, we know you'll love them. But is there is ever something wrong, we'll fix it.
Description

Affordable underground rainwater harvesting system for reliable home garden water saving and irrigation.

Designed and manufactured in the UK, this system helps homeowners, landscapers, and small businesses reduce water costs and improve sustainability while maintaining garden and irrigation needs year-round.

Key Features

  • Made in the UK from high-strength, rotationally moulded polyethylene.
  • Low-profile design for a shallower excavation — up to 500mm less depth required.
  • Ribbed and curved tank body adds exceptional strength and prevents deformation.
  • Environmentally friendly installation — no concrete base required; pea-gravel backfill compatible.
  • Pre-installed PF rainwater filter removes leaves and debris with simple maintenance.
  • Calpeda GXRM stainless steel submersible pump for reliable water pressure to hoses and irrigation.
  • Rodent guard and pump turret for secure and hygienic water delivery.
  • 10-year warranty for peace of mind and long service life.

System Includes

  • Underground tank: 3400L or 4400L
  • GXRM stainless steel submersible pump
  • PF filter with calmed inlet
  • Pump turret and lifting chain
  • Rodent guard
  • Optional telescopic neck and lid (supplied on 10,000L model)

Installation & Use

The Atlantis Economy range is designed for straightforward, environmentally friendly installation using a pea-gravel backfill — eliminating the need for concrete. The low-profile shape makes it particularly suitable for areas with high water tables or restricted digging depth.

The system connects easily to garden irrigation lines, outdoor taps, or hose fittings. Collected water is filtered before entering the tank, stored securely, and pumped on demand for car washing, watering, or light commercial use.

Specs

Choosing the Right Size

  • 1,800L–2,600L: Ideal for small gardens or single-household irrigation.
  • 3,400L–4,400L: Suitable for medium gardens or regular hose use.
  • 5,200L–6,800L: Best for large gardens or light commercial applications.
  • 8,400L–10,000L: Designed for estates, landscaping businesses, and sites with heavy water demand.
Capacity Capacity Length Width Height Weight
Liters  Gallons Milliliters Milliliters Milliliters Kilograms
1,800 400 2,080 1,260 1,360 88
2,600 572 2,880 1,260 1,360
 120
3,400 747 3,680 1,260 1,360 157
4,400 967 4,510 1,260 1,360 200
5,200 1,143 2,700 2,700 1,725 240
6,800 1,495 3,420 2,700 1,725 350
8,400 1,850 3,970 2,700 1,725 ---
10,000 2,200 4,770 2,700 1,725 468

 

Shipping

Shipping is FREE on all orders to customers within the United Kingdom.


We don't want to mess around with fine print and extra charges, we like things to be simple and easy. 

Want to know about our Returns Policy? Read more here.

Order Confirmation:

As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorised your credit card for the purchase.  

As soon as we receive your order, we automatically check to confirm that Your order is in stock and available for immediate shipment. If your item is on back-order or unavailable, we will void the pre-authorisation and reach out to you via e-mail to see if alternate arrangements can be made
made.  

If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and get to work preparing your order for shipment.


Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within three business days from the date of your order.   We will send you shipping confirmation within 24 hours of your order Leaving the warehouse to the e-mail address you provided when checking out.  

If you do not receive shipping confirmation from us within four business days days since your order, feel free to follow up with us at info@eco-stride.co.uk.

International Orders:

We will happily ship our fantastic products to international customers. Due to the extremely wide variety of product dimensions, we will provide an up-to-date shipping price quote for you on request.

If you are happy with our shipping quote, we will prepare an order and payment through our ultra-secure online payment gateway.

Damages:

Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery or do not agree to accept the delivery.

If you do accept delivery you are required to immediately take photos using your smart phone or camera of the damaged packaging or products inside the packaging. 
If your item(s) do arrived damaged please send photos to info@eco-stride.co.uk. then visit our Returns page and lodge your return claim online.

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.

Here's why we think you should shop with us at Ecostride.

But first, you should definitely hear from our customers here.

  • Free Shipping UK wide. No extra charges. Ever.
  • Price Match Guarantee. Best prices online guaranteed.
  • 30 Day Easy Returns. No happy with your product, we will take it back no questions asked.
  • Great Service. We pride ourselves on the best service, anywhere.
  • Your Satisfaction Guaranteed. We handpick our products for quality, we know you'll love them. But is there is ever something wrong, we'll fix it.