Advice sought on using an RO unit

[Spindoctor]

I bought an DD Aquarium solutions RUV050 RO unit at the weekend, if I had
known how bad the instructions were I might
have not bothered,

Eventually I worked out that you needed to put a flow resistor on the
output pipe but what's not clear from the unit is
what is filtered out and what's not.

I know I have to replace minerals and have bought some Kent supplies to do
so, what I don't know is whether I am still
meant to treat the water before putting it in my tanks.

Has anyone used one of these and if so can they provide advice, its a
conventional Twin pod (carbon and sediment
filters), TFC membrane (link here for picture
http://www.aquatics-online.co.uk/
listsections.asp?parent=81&seq=129#product522)

Regards

Brian


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[Rbogath]

The flow restrictor will go on the waste water side of the membrane housing
(the horizontal thing on top of the Prefilter Cannisters) The Waste water line
is on the side that has two outputs, the waste water one is usually offset
while the filtered water one is centered.

You can also go here:
http://www.simplydiscus.com/forum/index.php?board=5;action=display;threadi
d=7886
For a close up look at the different components that make up an RO unit, Feel
free to ask any questions you might have. I'm sure I can help you.

[Rick]

"Rbogath" > wrote in message
...
> The flow restrictor will go on the waste water side of the membrane
housing
> (the horizontal thing on top of the Prefilter Cannisters) The Waste water
line
> is on the side that has two outputs, the waste water one is usually offset
> while the filtered water one is centered.
>
> You can also go here:
> http://www.simplydiscus.com/forum/index.php?board=5;action=display;threadi
> d=7886
> For a close up look at the different components that make up an RO unit,
Feel
> free to ask any questions you might have. I'm sure I can help you.


I use a 50-50 mixture of R/O to tap water for my soft water fishes. I
installed a valve on the waste water line and other line from the valve to
my basement where I use the waste water to fill 3 large plastic garbage
cans. The amount of water wasted by these units in unbelievable and in my
case with 38 tanks I use all the waste water for other aquariums.

Rick

[Spindoctor]

On 25 Jun 2004 05:52:29 GMT, Rbogath > wrote:

Many thanks - look like i have connected it up properly - however, not
totally certain whether I should or should not still be treating the RO
water that comes before putting it into tank, for chlorine etc.



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[The Outcaste]

On Sat, 26 Jun 2004 07:57:39 GMT, Spindoctor
> bubbled forth the following:

>On 25 Jun 2004 05:52:29 GMT, Rbogath > wrote:
>
>Many thanks - look like i have connected it up properly - however, not
>totally certain whether I should or should not still be treating the RO
>water that comes before putting it into tank, for chlorine etc.
The carbon cartridge should remove all the chlorine/chloramines so no
treatment is needed. Just be sure to change it as recommended or
better yet do an occasional test for chlorine. The amount of chlorine
used by the water company may vary significantly throughout the year,
making a time or volume based cartridge change schedule hit or miss in
some cases.

I may be wrong on this, but from what I've seen, it looks like both
the RO and waste water flow through the carbon and sediment filters,
so you have to consider the waste volume as well as the RO volume if
changing on a "number of gallons" schedule.

HTH

Jerry

[Rbogath]

All water being processed through an RO unit has been Micron and Carbon
Filtered, so it's not necessary to dechlorinate.

RO units operated at low pressure/Low Temperature/High TDS conditions will have
a large amount of waste water. Increasing Feed Temperature and/or pressure will
reduce this significantly.

RandalB

[Spindoctor]

On 28 Jun 2004 05:28:16 GMT, Rbogath > wrote:

> All water being processed through an RO unit has been Micron and Carbon
> Filtered, so it's not necessary to dechlorinate.
>
> RO units operated at low pressure/Low Temperature/High TDS conditions
> will have
> a large amount of waste water. Increasing Feed Temperature and/or
> pressure will
> reduce this significantly.
>
> RandalB


Many thanks to all that replied

Brian


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