iSpring RCC1D Tankless 5-Stage RO/DI System, 150 GPD

1 / 7

Product guide

iSpring RCC1D Tankless 5-Stage RO/DI System, 150 GPD

The iSpring RCC1D is a tankless, five-stage reverse osmosis and deionization system listed at 150 GPD for aquarium and other specialized water needs. Its claimed 0–1 TDS output and compact design target users who need purified water without a storage tank, while the listing does not establish performance under every water condition.

At a glance

Tankless layout is intended to save space compared with a traditional tank-based setup.
The five-stage RO/DI design is described for aquarium, laboratory, dental, and other specialized applications.
Manufacturer claims the system can reduce TDS to 0–1. These are listing claims, not independently verified results.

Price

$153.99Save 19%

Reference price: ~~$190.99~~

Price checked: Nov 14, 2026

View offer

Often bought together

1/4 inch Tube Float Valve Kit for RO Water Reverse Osmosis System water filter Push in to Connect Pipe Hose Tube Fittings CCK tube（ball valve +L+15 feet pipe） (blue)

$9.99

Malida 1/4 inch O.D. Length 32.8ft(10 meters) RO Water Tubing, Hose Pipe for RO Water purifiers System,+ 1/4 O.D quick connector 10pcs

$12.59

Pros and cons

Pros

The tankless configuration avoids a storage tank and the listing also says it omits a faucet and post-carbon filter.
A 150 GPD membrane rating is specified for users needing water production for aquarium or other specialized applications.
Customer feedback describes setup as easy and reports positive experiences with TDS performance.

Cons

The listing says there is no traditional tank, faucet, or post-carbon filter, so buyers needing those components must account for a different setup.

Technical specifications

7 specifications

Identity and capacity
Brand	iSpring
Model	rcc1d
Rated production	150 GPD
Filtration stages	5-Stage

Dimensions and installation
Weight listed	14 pounds
Design	Tankless

Materials
Material listed	Polypropylene (PP), Stainless Steel

What to know before buying

The manufacturer describes 0–1 TDS output and removal of over 1,000 contaminants, including a claimed 98% lead removal rate. Actual results are not independently established and may depend on installation and incoming water conditions.

What’s in the box

Included

RO system

Who is it for?

A good fit for

Aquarium and reef-tank owners who need RO/DI water and prefer a tankless system.
Users in laboratories, dental settings, or other specialized applications seeking a compact RO/DI unit.

Less suited to

Buyers who require an included storage tank, faucet, or post-carbon filter.
Anyone who needs independently verified water-quality results or a stated performance guarantee under specific feed-water conditions.

iSpring RCC1D Tankless 5-Stage RO/DI System, 150 GPD · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 42 ratings

5 stars84%84%
4 stars5%5%
3 stars6%6%
2 stars0%0%
1 star5%5%

Customer feedback highlights ease of setup, perceived TDS performance, and value. These reports are relevant to buyers considering the system for aquarium or other specialized use, but they do not independently confirm the listing's 0–1 TDS claim or guarantee the same result in every installation. Aggregate ratings are generally favorable but include a small lower-rated portion, so they should not be treated as proof of uniform satisfaction.

Positive themes

Customer feedback describes the system as easy to set up.
Customers report positive impressions of TDS performance and value.

Frequently asked questions

What type of water system is the iSpring RCC1D?

It is listed as a five-stage tankless reverse osmosis and deionization system with a 150 GPD rating, intended for aquariums and other specialized uses.

Does the RCC1D include a storage tank or faucet?

The feature description says it has no traditional tank or faucet, and also omits a post-carbon filter. The listed package contents name only the RO system.

Does it produce 0 TDS water?

The listing claims 0–1 TDS water. That is a manufacturer claim rather than an independently verified result, and actual output can vary with water and operating conditions.

What do customers report about the system?

Supplied customer feedback mentions easy setup, perceived TDS performance, and value. Those reports describe customer perceptions and do not establish a measured result for every installation.