Hydro Logic MicRO Reverse Osmosis Filter - 75 GPD

Hydro Logic MicRO Reverse Osmosis Filter - 75 GPD

SKU #: HL31026
Hydro Logic Brand Product

Availability: In stock

Lead time: This product ships in 2 Weeks

  • Water Filter Systems
    Reverse Osmosis Filter
  • Gallons Per Day
  • System Ratio Waste:Clean
  • Recommended Feed Pressure
    60 PSI

micRO-75 from Hydro Logic

The micRO75 is a customized Reverse Osmosis water filter that is capable of removing up to 98%+ of most contaminants. The system is designed for use with hydroponic or horticulture applications, but can also be used effectively in a variety of other setting as well. The filter is built to give the maximum amount of flow from the membrane while sending less waste water to drain, compare to similar RO filters.


An economical, entry level, micro-sized, portable reverse osmosis system, 75 gallons per day solution.

Includes KDF/carbon filter and 75 GPD membrane. Also comes with garden hose connector, ¼" shut off valve, and pressure gauge. Features 2:1 drain to product water ratio for maximum efficiency.

The filter has a rated life of approximately 1,000 gallons of Reverse Osmosis product water. The membrane usually lasts 6-18 months depending on the quality of your tap water and how often you change the carbon/KDF pre-filter. Additional pre-filtration may be necessary depending on the quality of your tap water.

micRO-75 Includes:

  • x1 RO Membrane
  • x1 KDF/Carbon Pre-Filter
  • Wall/Floor Mount Bracket
  • 6 ft 1/4” Feed, Product and Drain tubings
  • Garden Hose Connector for the Supply Line
  • 1/4" Inline Shut-off Valve
  • Auto Shut Off Valve
  • External Flow Restrictor
  • Pressure Gauge with Safe Operating Zones

De-Ionization for micRO 75

This de-ionization filter is designed to serve as a post, polishing stage for any Reverse Osmosis system. After an RO system, the product water may contain trace amounts of nitrates, phosphates, and silicates as well other total dissolved solids (TDS). Certain applications such as aquarium, medical, manufacturing and others require 99.99% ultra pure, 0 PPM water. This DI filter will remove any leftover contaminants giving you the purest H2O available.

View the micRO De-Ionization Kit here

Additional Accessories

micRO-75 De-Ionization Kit

Replacement & Upgraded Filters

micRO-75 KDF/CAT Filter

micRO-75 KDF/CAT Filter

Replace every 1,000 Gallons

micRO-75 Membrane

micRO-75 Membrane

Replace every 6-18 months

DI Replacement post Filter

DI Replacement post Filter

Replace after 1,200 Gallons

micRO-75 Specifcations

  • Product Flow Rate: 75 GPH / 3 GPM
  • Dimensions: 6" x 15" x 5"
  • Weight: 6 lbs.
  • Replace housings every 3 years
Tech Specs


BrandHydro Logic
Weight (lb.)5.8
Lead TimeThis product ships in 2 Weeks
Prop 65No
Gallons Per Day75
System Ratio Waste:Clean2:1
Inlet Tubing Size1/4"
Product Tubing Size1/4"
Waste Tubing Size1/4"
Gallons Per Hour3.1
Min. Feed Pressure40 PSI
Recommended Feed Pressure60 PSI
Operating TemperatureMax 100 °F
Max TDS1000 ppm
Max Hardness170 PPM (10 grain)

Hydro Logic MicRO Reverse Osmosis Filter - 75 GPD Reviews

Better than advertised
I use this filter and the deionizer add-on. I get 0 water at 6.7ph with roughly 1.15:1 wastewater ratio. About 1.5 gals an hour at 80PSI. Better than advertised and @. $0.006 a gallon including waste. I am very, very happy with this setup. I have hard Rocky Mountain spring water coming out the tap. Established plants love it. Good for people too. Edibles and baby plant not so much. So I need to covert about 20 Gal a week for house and garden. This little filter is perfect.

Works great
I bought this for my Juice Plus Tower Garden. It works great. Installation was easy with sharkbites and PEX. Output is pretty slow but not really an issue for me. PPM went from 300-400 to 0-2. Plants love it.

I have had this for 2 months now it has worked great for me, has a good fill time, ph is good and the price is good as well.

A great option for smaller scale RO needs
I've had this unit for around a couple months now, and I'm very pleased. The only other RO units I could find for this price were 'no name' or 'off brand' units that had sketchy reviews at best. I was comfortable making this purchase because HL is a pretty big name in the industry and I have heard great things about their units. Now that I own one myself, I see why they come so highly recommended. Be aware that if your water source is under 40 psi that you may need a booster pump to get the 75gpd thats advertised. My water source pressure goes from 35-45 psi and I'm happy with the results, even at the lower pressure I only get 9 or 10 ppm when I started at something like 330