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SpectraPure® 180GPD CSPDI RO/DI System w/ Manual Membrane Flush

$289.99 $260.99Save: $29.00 (10%)

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Item #: SP12311

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SpectraPure® 180GPD CSPDI RO/DI System w/ Manual Membrane Flush. Upgraded for 2014, the new CSPDI incorporates SpectraPure’s individually tested, 99% ultra-high-rejection SpectraSelect™Plus TFC membrane, 0.5 micron Sediment & 0.5 micron Carbon Block Pre-Filtration Stages, a Super-DI™ SilicaBuster™ High-Capacity DI Cartridge, and a sturdy, powder-coated wall mount bracket. With the new 3-Probe TDS Meter, water purity levels are now monitored at the membrane feed, at the membrane output, and at the DI stage output, assuring “000 TDS” product water. Periodic membrane flushing rinses accumulated impurities and concentrated waste water from the membrane surface. Membrane life and performance are preserved, allowing for a sustained 2:1 waste-to-product ratio. Feed valve, ASO valve, float valve, pressure gauge, and hose adapter are all included. Ultra-high-purity water at an economical price, CSP™ RODI purification systems maximize pure water production through application of our best TFC RO membranes and specialty deionization cartridges.

  • 2:1 waste-to-product ratio produces 50% less waste water
  • Two SpectraSelect™Plus 90gpd individually tested ultra-high (99%) rejection thin-film composite RO membrane
  • Manual membrane flush valve for extended membrane life and performance
  • SuperDI™ SilicaBuster™ high-capacity DI cartridge w/ custom blended ultra-pure deionization resins
  • 0.5 micron MicroTec™ long-life high-efficiency sediment pre-filter
  • 0.5 micron carbon block pre-filter w/ 20,000 ppm-gal chlorine removal capacity… all the carbon block you ever need
  • Three-probe inline TDS meter monitors membrane feed water, membrane product water, and DI product water purity
  • Tri-color custom pressure gauge indicates when to change pre-filters
  • Automatic shutoff valve (ASO) controls membrane feed while saving water
  • In-line ball valve for manual system shut off
  • Float valve for unattended operation
  • High-quality standard 10 inch clear filter housings
  • Deluxe powder coated wall-mount bracket
  • 6-foot feed tubing, 8-foot product and waste lines included
  • Housing wrench for easy filter removal
  • Garden hose adapter for tap water hookup
  • Dimensions: 15in x 7in x 16in
  • 3-year manufacturer`s warranty
*RO and RODI systems that are installed areas with low feed-water pressure (lower than 45 PSI) often require a booster pump to optimize system operation.
The correct Booster Pump to be used with SpectraPure’s Manual Membrane Flush (-MF) RO or RODI Systems is SpectraPure’s auxiliary High-Flow Booster Pump Kit P/N: BPHF-MF-115. This kit is designed specifically for use with SpectraPure Manual-Flush Systems. Other booster pump kits are not compatible with SpectraPure Manual-Flush (-MF) systems.

Manufacturer information

SpectraPure Aquarium Supplies
SpectraPure was established in 1985 and is located in Tempe, Arizona, home of Arizona State University. SpectraPure is dedicated to excellence in the design and manufacture of water filtration and purification systems for household, commercial, laboratory and light industrial applications. Their product lines includes a full range of systems and equipment, including drinking water systems, water softeners, filtration systems, reverse osmosis units, RO/DI and deionization systems and many other technological innovations and water purification accessories. SpectraPure provides innovative, state-of-the-art solutions to water purity problems and applications.

4 Stars


Reviewed on
December 05, 2020

No, I would not recommend this.

Leaky Leaky

Pros: Good 99% rejection membrane

Cons: Poor quality from manufacturer.

I owned several Spectrapure units in my reefing days, but can say their support and quality is starting to slide.
Soon as I plugged this unit in water shot up 10 feet in the air due to a ping size leak from the fittings. I pulled the fitting out retapped it, but still leaked because the original installer cross threaded it. There pretty much no easy fix for me so this went back to marine depot. Bought the 6 stage version, and that one has a bad flow resistor. Waited 3 weeks and no response from spectrapure.

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Reviewed on
January 24, 2020

Yes, I would recommend this.

It works

Pros: Filters the water.

Cons: I got a leaky unit... lol

I am giving this unit 4 out of 5 stars simply because when I hooked this unit up, whoever assembled it at the factory didn't tighten a fitting between the 2 canisters and it caused me to have to totally disassemble the unit to correct the problem... I would have sent it back but I needed the unit up and running quickly... Since then the unit has operated fantastic, it came with an auto shut off float valve and the tds meter is Awesome! I would recommend it based on the fact that I probably got the one that was put together on Friday right before quitting time... lol

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Reviewed on
January 22, 2020

Yes, I would recommend this.

One of the best!

Pros: Comes with everything needed, including shutoff and float valve.

Easy set up and includes a float valve for shutting off the flow.

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Reviewed on
October 04, 2018

No, I would not recommend this.

Not Happy At All

Pros: As always Spectrapure is my first choice and always saves me on DI's

Cons: Got this unit unit bent on both sides and pressure gauge don't work. I know this cause i switched it with my other Maxcap unit and looks good!

Got this unit and was bent on both sides. DI Cartridge holder and left side of the unit holder. Missing flow restrictors, damaged pressure gauge too. Emailed marinedepot probably a week ago and still no reply. I have bought 7 units in total using my clients accounts for custom tank builds before with no issues!

Not able to post 3 pics so can't show PSI guage not and don't matter anyway cause it's on zero but does work and TDS = 0

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ronald svec

Reviewed on
December 13, 2015

Yes, I would recommend this.

Happy so far

My first venture into RO/DI systems, as I'm tired of paying for distilled water and dealing with plastic jugs. The system was easy to set up and use so far (only had it a week). My only issue is that I have cold well water and my pressure is on the lower range of what is required (40-50 psi), so my output is more like 20 gal/day rather than 90. I'll probably upgrade with a booster pump before too long.

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