Kent Marine 35 GPD Hi-S RO System

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This item has been discontinued.

Kent Marine

Kent Marine Hi-S RO System Features: Most RO systems are very poor at silicate removal (some as poor as 50% ~ 70%). Kent Marine exclusive new generation HI-S™ (High Silicate Removal) membranes remove up to 99% of silicate.

  • Hi-S High Silicate removal TFC Membrane
  • Carbon Block Matrix Filter
  • 1 Micron Sediment Pre-Filter
  • Available in 35 gpd, 60gpd and 120gpd
  • RO 120 Hi-S include a second piggy back membraneand membrane housing to double your water output
  • clear canister
GPD: 35

The RO35HiS is a full sized 35 gallon per day Hi-S High Silicate Removal RO unit with liquid filled pressure gauge, R/O monitor for checking water quality and clear canisters. Full size units provide better pre-filtration and less chance of membrane fouling. This unit will remove an average 97–99% of tap water contaminants. The RO35HiS includes a 35 gallon per day Hi-S membrane, a CF1M 1 micron sediment pre filter, a CFCE solid carbon block filter, a 3/4 inch garden hose adapter and 6 feet of yellow, blue and orange tubing.

This unit can be run on ANY water system, well or city.

We recommend adding a FLUSHKIT to your system to extend your membrane life, particularly in hard water conditions.

  • Length: 10"
  • Width: 5 ¾"
  • Height: 15 ½"
  • Dry weight: 10 lbs
  • Optimal input water temp: 70–77°F, 21–25°C
  • Optimal PSI: 65
  • Optimal Total Dissolved Solids: <200 ppm
  • Input water type: Any water system
  • Membrane type: Hi-S
  • Rated Gallons Per Day: 35
  • Waste to Product ratio: 35 gpd = 4g waste to 1g product, 60 gpd = 3g waste to 1g product
  • Inhibiting/Damaging tap water chemicals: Iron, Calcium, Magnesium, Heavy Sediment
  • Prefilter media #1: CF1M: 10", 1µ string wound sediment filter
  • Prefilter media #2: CFCE: 10", 10µ solid block carbon filter
  • Post filter media: N/A
  • Supplied input water adapter: Garden Hose Adapter, ¾" standard thread
  • Tubing type: ¼" pressure tubing
  • Filter change times
    NOTE: change times are varied depending on the tap water conditions.
    Stated times are an average: Hi-S membrane: 3 to 5 years, CF1M: 6 months, CFCE: 3,500 gallons or 6 months.

Product Manuals & Documentation

Kent Marine 35 GPD Hi-S RO System

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

Kent Marine Aquarium Supplies
Kent Marine was established by aquatic hobbyists who saw a need for products that aid the user in creating the most natural enclosed marine and freshwater environment possible. From vitamin and mineral supplements to nutritional products and filter media, Kent Marine set the benchmark and was one of the first in the aquatic industry to provide these unique solutions. For the past 15 years, Kent Marine has been committed to providing effective ways to keep beautiful, healthy aquariums. Through continuous research, testing and development, new products like salt mix, scrapers and reverse osmosis filtration were brought into the Kent Marine family.



Experience Level: Intermediate

Kent Marine RO

Looks good so far. Easy to set up, even with a flush kit. Purchased a DS Meter to go with it, and it reads 248 in and 001 out. Quality made product.

2 out of 2 found this review helpful

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Experience Level: Intermediate

Kent Marine 60GPD Hi-S RO

Works great. I didn't think we needed an RO because our artesian well is down really deep and sits on ledge. The water is excellent. This made a noticeable difference in the aquarium water quality right off. I was quite amazed. You will need a booster and flush kit; the unit is very slow cycling your water and it ties up a woman's kitchen sink for too long. The booster will be well worth it time wise.

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Experience Level: Expert

Very sound product

Well built, excellent instructions, works perfectly. I have nothing but praise for this unit. The water quality is superb and DI is NOT necessary.

2 out of 3 found this review helpful

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