RE: [OGD] RO water systems

[Greg Filter]

I 
wondered why John had not responded. I checked the email address, and the 
one that Ray lists is in error. He has not been feeling well, let me see 
if I can get his attention so that you can get the answers. 


I can 
give some general advise, based on information that John has provided me in the 
past. But he is the authority.

It is 
probably wise to assume that you will get less than the rated capacity of the 
membrane. I usually assume half the rated production. Water 
temperature, and water pressure are the major influences in my experience. 
I use what is called a permeate pump to improve the production and increase what 
is actually put into the tanks. John can give you details, but it 
essentially reduces the backpressure on the membrane. I don't know how 
much membranes differ for the kinds of units we use. His guidance was to 
put the RO system in AFTER the water softener. 

Greg
-Original Message-From: Ray 
[mailto:[EMAIL PROTECTED]Sent: Tuesday, December 28, 2004 12:06 
PMTo: the OrchidGuide Digest (OGD)Subject: Re: [OGD] RO 
water systems
Tom,

You definitely want to contact John Talpa. He is a water-treatment 
professional, and anorchid grower to boot.

I bought my RO unit from PremierH20 (25 gpd), and John helped me upgrade it 
to 100 gpd at a fraction of the cost of a new system.

I believe his email is [EMAIL PROTECTED]
Ray Barkalow - First Rays Orchids - www.firstrays.comPlants, Supplies, 
Books, Artwork, and Lots of Free Info!.
- Original Message - 
From: Thomas Hillson 

To: the OrchidGuide Digest (OGD) 
Sent: Tuesday, December 28, 2004 11:57 AM
Subject: [OGD] RO water systems
Hi,I am looking to upgrade my RO system to a bigger and 
better system as my orchid collection is growing and I am using and 
automatic humidification system this winter and both of them are exceeding 
the capacity of my current system. If you want to respond off line that 
is good, but I think everyone would appreciate some dialog that was not 
related to taxonomy or people arguing.I need a system that will give me 
at least 50 gallons per day and I am thinking of going to 75 to 100 gallons 
just to give me room to grow. My current 25 gallon per day system was and is 
good, but is too small. The local dealer I got it from is no longer in 
business, so I am shopping for a new system. I have well water, so I need a 
system with a booster pump and a membrane that can take alkaline water. I 
need high capacity. I have a 40 gallon 40 psi pressure tank on my 
current system and a 250 gallon storage tank.If any one has a large 
capacity system they have been happy with I would like to know more about 
it, where you got it and how it has worked for you. If you have a system you 
have not been happy with I would like to know about that so I can avoid that 
company. I have found lots of sources on the net, but I want some comments 
to help me narrow down the companies before I start calling 
them.thanks,-- 
--Tom/| 
Tom 
Hillson 
Orchid Grower Specializing| [EMAIL PROTECTED] 
In Paphs and Pleurothallids| [EMAIL PROTECTED]| http://www.orchids.iastate.edu-|"There 
is always room for one more 
Orchid!!"___the 
OrchidGuide Digest (OGD)orchids@orchidguide.comhttp://orchidguide.com/mailman/listinfo/orchids_orchidguide.com 

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RE: [OGD] RO water systems

[Roger, in Bangkok]

One simple thing to keep in mind is to not choose too large a system!
RO is not a very good small batch system, it is at its happiest when it
runs on longer duty-cycles.  Increasing your storage capacity so that
the system runs longer and fewer cycles will decrease your maintenance
costs while prolonging the useable life.

Another point to consider is anytime that the system may need to be
shutdown for a long period of time, such as through the winter.  If shut
down for weeks or months on end, then storage chemicals should be pumped
into the membranes in order to prevent bacteria and fungal growths from
clogging or weakening the membranes.

Regards/Roger, in Bangkok

-Original Message-  On Behalf Of Thomas Hillson


Hi,

I am looking to upgrade my RO system to a bigger and better system as 
my orchid collection is growing and I am using and automatic 
humidification system this winter and both of them are exceeding the 
capacity of my current system. If you want to respond off line that 
is good, but I think everyone would appreciate some dialog that was 
not related to taxonomy or people arguing.

I need a system that will give me at least 50 gallons per day and I 
am thinking of going to 75 to 100 gallons just to give me room to 
grow. My current 25 gallon per day system was and is good, but is too 
small. The local dealer I got it from is no longer in business, so I 
am shopping for a new system. I have well water, so I need a system 
with a booster pump and a membrane that can take alkaline water. I 
need high capacity. I have a 40 gallon 40 psi pressure tank on my 
current system and a 250 gallon storage tank.

If any one has a large capacity system they have been happy with I 
would like to know more about it, where you got it and how it has 
worked for you. If you have a system you have not been happy with I 
would like to know about that so I can avoid that company. I have 
found lots of sources on the net, but I want some comments to help me 
narrow down the companies before I start calling them.

thanks,

-- 
--Tom

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