Will this work for the aquatic life buddie?

Yes it is still working well for my aquatic life ro buddie.

Will this work with hydro logic stealth ro200?

Yes,our 100GPD-2012 size membrane is perfectly compatible with Hydro-logic's Stealth 200 Reverse Osmosis System.

Do any of your ro membranes fit the ao smith ao-us-ro-mb-4000

I am unfamiliar with the system you were referring. However I can offer you this. This is the standard in filtration systems as I know it. If the membrane meaning the RO membrane can fit in a housing that is designed for it then usually that means it will work. So an example would be if you had a 10 inch long 2 1/2 inch diameter housing for a membrane you would roughly need a 10 inch long 2 1/2 inch wide membrane lol. Something helpful for the future as well. Whenever I purchase anything I keep the instruction manual for it in the same place for everything I own. That way if I have a question I can simply go to my “library” and find my answer lol.

Will this work with an ultima vii system?

Your system makes 24gpd, The membrane filter your asking about makes 50gpd. You can upgrade your system to 50gpd by making some changes to the flow restrictor. Go to utube and view numerous videos on RO systmes. The filter will work only after some changes to your system.

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50G RO

Product ID: 44762648

Details

External Testing Certification
NSF
Item Weight
7.2 ounces
Material
Polyamide
Product Benefits
Provides water
Product Dimensions
1.75"D x x

💧50 GPD high flow rate

🔧Universal 11.75x1.75 inch size

🛡️97% salt rejection efficiency

$39.14

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Description

💧 Pure water, zero compromises — upgrade your hydration game today!

SEAMLESS SYSTEM FIT - Industry-standard size ensures hassle-free installation in most RO systems.
LONG LASTING PERFORMANCE - Reliable 24-36 month lifespan keeps your water pure without frequent replacements.
ELITE CONTAMINANT DEFENSE - Blocks 99%+ of heavy metals, nitrates, and harmful minerals for peace of mind.
DEDICATED AMERICAN SUPPORT - Expert help on demand, making you part of the Membrane Solutions family.
PREMIUM PURIFICATION POWER - Crafted from 100% food-grade Thin Film Composite for crystal-clear water.

The Membrane Solutions NSF/ANSI 58 Certified 50 GPD Reverse Osmosis Membrane delivers top-tier water purification with a 97% salt rejection rate and 0.0001-micron filtration. Designed to fit standard 1812/2012 RO housings, it ensures broad compatibility and a long 2-3 year lifespan. Certified for safety and backed by expert US-based support, this membrane transforms your tap water into pristine drinking water, reducing hundreds of contaminants including heavy metals and nitrates.

Specifications

ASIN	B06XC9BVVC
Best Sellers Rank	#12,952 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #94 in Replacement Under-Sink Water Filters
Brand Name	Membrane Solutions
Compatible Water Purifier Models	APEC Water Systems ROES-50
Customer Reviews	4.6 4.6 out of 5 stars (3,246)
External Testing Certification	NSF
Global Trade Identification Number	00850071881820
Item Dimensions D x W x H	1.75"D x 1.75"W x 11.75"H
Item Highlight	11.75"x1.75" RO Membrane Water Filter Replacement For UnderSink RO Drinking Water System and Aquarium Reef, 1 Pack
Item Weight	7.2 ounces
Manufacturer	Membrane Solutions Corp
Manufacturer Part Number	MSRS001
Material Type	Polyamide Thin-Film Composite
Model Number	ROULP-1812-50
Number of Items	1
Number of Packs	1
Product Benefits	Provides safe-clean drinking water by reducing hundreds of impurities
Set Name	Single
UPC	850071881820
Unit Count	1 Count

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