Product Description

Managing large properties means big water bills and even bigger headaches when trying to build your own system. The RainFlo 1700-IG is the professional-grade solution that removes all the friction. It’s a fully integrated, in-ground rainwater harvesting system built for serious capacity, seamless setup, and long-term performance.

You don’t have to waste time figuring out what works together or where to find it, every component has been carefully selected and perfectly matched for optimal performance. That means no compatibility issues, no missing parts, and no costly mistakes. Just everything you need, ready to install and built to last.

Ideal for large residential properties, estates, or light commercial projects, this system lets you collect, store, and distribute water efficiently without relying on overburdened municipal systems.

You’ll save money, protect your property from stormwater runoff, and make a powerful eco-conscious choice that supports water conservation and sustainability.

If you need capacity and reliability without complexity, the RainFlo 1700-IG delivers it all in one box.

The Tank Guaranteed Not to Collapse When Empty*
* When installed in compliance with manufacturer's installation instructions

15 Year manufacturer's warranty

How to Assemble a Carat Tank Video:

Features

• Graf 1700 Gallon Carat Tank – Underground cistern with pedestrian-rated manway, 14" telescopic riser, and childproof PE lid. Can be left empty without risk of collapse.

• Graf Optimax Pro Internal Filter Package – Self-cleaning cascade filter with calming inlet, overflow siphon, and fittings. Handles roof areas up to 3,750 sq. ft.

• RainFlo 1.25 HP Submersible Pump – Heavy-duty, 3-stage 230V pump delivering up to 24 GPM and 78 PSI.

• RainFlo 230V Automatic Pump Controller – Multi-function controller automates water delivery from the tank.

• RainFlo 1.25" Floating Extractor – Suspends inlet filter 4" below the surface to pull the cleanest, most oxygenated water.

• RainFlo Pump Connection Kit – Includes adapter and stainless steel clamp for easy, secure connection to pump.

• 1.25" Heavy Duty Bulkhead Fitting – Pre-installed for a watertight connection from inside the tank to your plumbing system.

	The Graf 1700 Gallon Carat Tank - Graf Carat-S 1700 Gallon Underground Cistern with Pedestrian Manway, 14" Height Telescopic Riser and Childproof PE Lid. Unlike most cisterns, the Carat can be left empty without the risk of collapsing.
	The Graf Optimax Pro Internal Filter Package - Internal self-cleaning cascade filter package. Includes filter, downpipe attachments, calming inlet, overflow siphon and Spannfix sleeve. Suitable for roof areas up to 3,750 sq. ft.
	The RainFlo 1.25 Horsepower Submersible Pump- Heavy-duty, high performance 230V/60Hz 1.25 horsepower 3-stage submersible pump with 1.25" threaded inlet to easily accept a floating extractor. Produces up to 24 GPM and up to 78 PSI.
	The RainFlo 230V Automatic Pump Controller - Provides automatic multi-function control for your water pump.
	The RainFlo 1.25" Floating Extractor - The floating extractor consists of an air-filled ball which suspends the floating inlet filter 4" below the water's surface where the cleanest and most oxygenated water resides.
	The RainFlo Pump Connection Kit with MPT to hose barb adapter and marine-grade stainless steel hose clamp to connect the pump to the floating extractor.
	The 1.25" Heavy Duty Bulkhead Fitting is installed in the side of the tank dome for a watertight connection between the inside and outside of the tank for the pump output plumbing.

Returns Policy

If you are not satisfied with your purchase, please send an email to support@thefountaindirect.com or call us to request a Return Material Authorization (subject to manufacturer approval) prior to returning any merchandise. Requests for returns on standard, non-special-order items may be made within 30 days of the item's ship date.

In order to provide our customers the highest quality products at the lowest possible prices, we only accept returned merchandise in "factory new” condition. We must be able to resell the product as new in the condition it is returned to us.

Downloads