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Showing results 1 to 24 of 24
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Search: Posts Made By: Ray
Forum: Advanced Discussion 05-07-2020, 05:32 PM
Replies: 83
Views: 3,456
Posted By Ray
The "nastiness" depends on the amount of air...

The "nastiness" depends on the amount of air exposure.

Pure RO has no taste and has a pH of 7. Upon exposure to the air, carbon dioxide starts dissolving into it and dissociating, forming...
Forum: Advanced Discussion 05-07-2020, 04:18 PM
Replies: 83
Views: 3,456
Posted By Ray
The systems I sell have a 3/8" pure water line. ...

The systems I sell have a 3/8" pure water line. Put a TEE in that line near the system, with a manual valve to allow you to fill up containers there.
Put a second one up in the basement ceiling,...
Forum: Advanced Discussion 01-26-2020, 03:16 PM
Replies: 83
Views: 3,456
Posted By Ray
The primary issue I have with TDS meters is that...

The primary issue I have with TDS meters is that you don't know if the "10" ppm you get with a new membrane is real. It could be anywhere from 1 to 20 or so. Not that that's a big deal, but it can...
Forum: Advanced Discussion 01-26-2020, 12:55 PM
Replies: 83
Views: 3,456
Posted By Ray
The TDS may drift upward. If itís 3 now, Iíd...

The TDS may drift upward. If itís 3 now, Iíd think about a new membrane when it gets above 10.
Forum: Advanced Discussion 01-25-2020, 04:28 PM
Replies: 83
Views: 3,456
Posted By Ray
Yeah - I used to have that perspective, but my...

Yeah - I used to have that perspective, but my collection and use of RO is a LOT smaller now.
Forum: Advanced Discussion 01-25-2020, 01:43 PM
Replies: 83
Views: 3,456
Posted By Ray
Ah HAH! Context DOES matter! Yes, there are...

Ah HAH! Context DOES matter!

Yes, there are volume totalizers - The FM-2 I mentioned earlier is one, but it goes on the input of the system.

As far as "if the output falls", that would be a...
Forum: Advanced Discussion 01-25-2020, 08:29 AM
Replies: 83
Views: 3,456
Posted By Ray
5/375 is 1.3%, yes. That mean 98.7% of the...

5/375 is 1.3%, yes. That mean 98.7% of the dissolved solids are in the flush water, and now that youíre at a 1:2 pure:flush ratio, that flush water has a TDS of about 560.

Iím not certain what...
Forum: Advanced Discussion 01-24-2020, 02:02 PM
Replies: 83
Views: 3,456
Posted By Ray
There are filter monitors available, like the HM...

There are filter monitors available, like the HM Digital FM-2.

However, those self-contained filter cartridges are typically good for 12 months or 2500 gallons (at least the ones I sell are), and...
Forum: Advanced Discussion 01-21-2020, 06:27 PM
Replies: 83
Views: 3,456
Posted By Ray
Most monitors Iíve seen test the pure water only...

Most monitors Iíve seen test the pure water only you simply got an upgraded one.

I donít know the membrane you may have, but your pure water TDS shouldnít be more than a few percent of the...
Forum: Advanced Discussion 01-21-2020, 12:41 PM
Replies: 83
Views: 3,456
Posted By Ray
Right you are - but still easy to install. ...

Right you are - but still easy to install.

Cut two lines, plug the cut ends into the sensors and away you go.
Forum: Advanced Discussion 01-21-2020, 11:08 AM
Replies: 83
Views: 3,456
Posted By Ray
I have found the pvc mini-float valves at...

I have found the pvc mini-float valves at usplastic.com to work well.

The inline TDS meter should just fit somewhere in the pure water line between the system and the tank.
Forum: Advanced Discussion 01-19-2020, 08:25 AM
Replies: 83
Views: 3,456
Posted By Ray
I have been using, building and selling RO...

I have been using, building and selling RO systems for greenhouse and residential use for over 30 years and have literally never needed to back flush.

If the output changes that drastically that...
Forum: Advanced Discussion 01-18-2020, 06:20 PM
Replies: 83
Views: 3,456
Posted By Ray
I have no idea what this "big problem" is. No...

I have no idea what this "big problem" is. No valve is necessary in the flush line, as the flushing action occurs with normal operation of the RO system. Back-flushing is unnecessary. The...
Forum: Advanced Discussion 01-18-2020, 04:38 PM
Replies: 83
Views: 3,456
Posted By Ray
Looks to me like you have the raw- and pure water...

Looks to me like you have the raw- and pure water connections swapped.

Assuming it is a standard hydraulic cutoff, the blue line from the carbon filter should enter the switch on the "in" port...
Forum: Advanced Discussion 01-18-2020, 12:56 PM
Replies: 83
Views: 3,456
Posted By Ray
Yes, the raw water side of the hydraulic cutoff...

Yes, the raw water side of the hydraulic cutoff goes where the orange clip is. The pure water side can go right where the DI filter was.

The two cartridges should probably be replaced every...
Forum: Advanced Discussion 01-17-2020, 12:22 PM
Replies: 83
Views: 3,456
Posted By Ray
Either way will work, but personally, I'd put it...

Either way will work, but personally, I'd put it right after the membrane. DI is really overkill for orchids - 0-1 ppm versus under 10 isn't worth the expense. The next time you need to replace...
Forum: Advanced Discussion 01-14-2020, 06:28 PM
Replies: 83
Views: 3,456
Posted By Ray
I doubt you'll need it, but feel free to give me...

I doubt you'll need it, but feel free to give me a call if need be. maybe I can help walk you through it.
Forum: Advanced Discussion 01-14-2020, 08:06 AM
Replies: 83
Views: 3,456
Posted By Ray
The effluent has the same dissolved solids as the...

The effluent has the same dissolved solids as the raw water, but the effluent TDS will be TDS(input) x (in/effluent).

With a "3 gallons raw in / 1 gallon of pure water out" system, that's 3/2 or...
Forum: Advanced Discussion 01-13-2020, 04:58 PM
Replies: 83
Views: 3,456
Posted By Ray
For a fixed chemistry of impurities, a membrane...

For a fixed chemistry of impurities, a membrane will remove a relatively fixed percentage. Generally, the higher the molecular weight, especially over 100, the better the rejection. Inorganic ions...
Forum: Advanced Discussion 01-10-2020, 02:08 PM
Replies: 83
Views: 3,456
Posted By Ray
Every one I've ever seen has screw heads visible...

Every one I've ever seen has screw heads visible on one side - that's the "pure water" side of the switch.
Forum: Advanced Discussion 01-10-2020, 08:35 AM
Replies: 83
Views: 3,456
Posted By Ray
Look at my graphic above. The ports should be...

Look at my graphic above. The ports should be labeled ďinĒ & ďoutĒ, but I described the connections, as well.
Forum: Advanced Discussion 01-09-2020, 07:02 PM
Replies: 83
Views: 3,456
Posted By Ray
WW - there is absolutely nothing wrong with the...

WW - there is absolutely nothing wrong with the "cheapie".

I will be happy to help you install it.
Forum: Advanced Discussion 01-09-2020, 09:10 AM
Replies: 83
Views: 3,456
Posted By Ray
Thanks for mentioning the flush water ratio.. ...

Thanks for mentioning the flush water ratio..

Off-the-shelf units typically produce 3 or 4 gallons of flush water for every gallon of pure water produced. That can be reduced by changing the flow...
Forum: Advanced Discussion 01-08-2020, 05:16 PM
Replies: 83
Views: 3,456
Posted By Ray
Reverse Osmosis Water Management

Created to help WaterWitchin, but I thought I'd Nye on a bit, so here's my thoughts:

Pure water is best for orchids. They evolved getting very pure water, whether that be heavy, tropical rains or...
Showing results 1 to 24 of 24

 
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