Reverse osmosis system recommendations

[My Green Pets]

I just moved.

My previous home's tap water measured 85 ppm tds, fine for the orchids, rarely even saw any white residue.

New home's tap water measures nearly 400 !!! So i see an RO system as my only option. It rarely rains here, so collecting rainwater/snow wouldn't yield much.

Any suggestions? I'm overwhelmed by internet search results. I only need a few gallons per day at most. And I want very low ppms, like 0 if possible. It seems like a lot of the specs and reviews focus on clean, delicious drinking water, but obviously that is not my concern. I want low-to-no ppms.

 

[Linus_Cello]

Collect de-humidifier water? Buy ro/di from a fish/aquarium store?

 

[Ray]

Zero is impossible with RO - 97-98% reduction is normal - but it's also totally unnecessary.

I built and sold RO systems for 25 years, and would be happy to discuss options if you want to give me a call.

Send me a PM and we'll connect.

 

[mrhappyrotter]

This is probably overkill for your needs, but I use this Hydro-Logic Ro system (https://joshsfrogs.com/sp/hydro-logic-stealth-ro-150-system-with-kdf-carbon-filter-hl36012). I chose it because I can easily hook it up outside to a hose and run it all day to fill my jugs for the week. I don't think it's going to get you 0 PPM water, but my results were always very low when I tested.

Only downsides so far: It's a bit expensive and the company (Hydro-Logic) didn't stand by their product when I needed them to, so that kind of sucks. If you do decide to buy it, don't get it from Amazon. If anything goes wrong, as I found out, Hydro-Logic won't help and Amazon will drag it out for months.

If you only need a few gallons a day, you can buy 4 or 5 gallon food-safe plastic gallon water jugs and refill those at places like pet shops and even Walmart (at least in my area). It will cost more in the long run, but it would get you by in the short term and you'll be able to use the jugs even if you do eventually get an RO filter.

Good luck!

 

[BrucherT]

Following because I can no longer m use mine I’ve been enjoying for several years. Hoping there’s a countertop version recommended.

 

[Pride_Tropicals]

I have the 100 GPD RO Buddy and it seems to be working fine. It was like $100 on amazon and hooks up to your sink. My only complaint is it isn't very efficient due to the lack of water pressure at the tap, but they also have a pressure booster available for it. It works fine for now, but my water bills have gone up noticeably. I use it to fill humidifiers as needed and make ~10 gallons of fertilizer solution per week.

 

[Tom-DE]

For Paphs and Phrag, how high of the TDS in your water does it have to be before you need to install a RO system? I think anything below 120 ppm is fine for most orchids, perhaps even 150ppm? I would like to hear your opinions on this..., and obviously, William's current water has very high tds, I don't want to highjack the topic, so please also continue that too.

 

[Ray]

Following because I can no longer m use mine I’ve been enjoying for several years. Hoping there’s a countertop version recommended.

I used to sell a counter-top system, but the RO Buddie is a good option that copied my design.

Before you go investing in another system, what's wrong with the one you "can no longer use"?

For Paphs and Phrag, how high of the TDS in your water does it have to be before you need to install a RO system? I think anything below 120 ppm is fine for most orchids, perhaps even 150ppm? I would like to hear your opinions on this..., and obviously, William's current water has very high tds, I don't want to highjack the topic, so please also continue that too.

My water is about 100 ppm out of the town's wells, then they throw in some 50 ppm Ca to "sweeten" the taste. No issues with my plants.

@My Green Pets - whatever you do, get a system that uses standard filters and membranes. The last thing you want to do is get saddled with a proprietary supply with jacked-up prices.

A few things to keep in mind:

Unless you go really big and pricey, RO systems are not on-demand water supplies. "100 gpd" sounds like a lot, but that's only about a cup a minute, and that would make watering awfully tedious. The key is storage - set the system up to fill a tank of the required supply, and let it go.

I recommend that you estimate the gallons used per watering and number of waterings per week, then rough calculate a per-day usage. Storage should be at least two days worth.