What ro unit to buy?

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28 Jul 2016 16:20 #1 by Jonlate (Jon Late)
Hi people,
For the past week I have been looking at water filters, and now have some questions!
As the post says, what ro filter should I buy for my saltwater tank?
Do I need a rodi unit or just a ro unit?
The prices vary so much, but is it a case of 'you get what you pay for?'
Take the one on our sponsors page from Western Green.

westerngreen.ie/collections/reverse-osmo...5-stage-proline-plus

It's a very good price at €180, but will this get my water clean enough for making salt water from?
How many filter stages do I need?
What do you use?
Should I just make my own up?

Any help greatly appreciated.

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28 Jul 2016 22:28 #2 by anthonyd (Anthony Debesne)
That is the one i use for my shrimp tanks, it has a booster pump to compensate for my low low water source
www.vyair.com/Scripts/prodView.asp?idproduct=192

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30 Jul 2016 15:11 #3 by Jonlate (Jon Late)
I see the 10 inch filter containers for sale for about €12. Is it worth buying 3 of these and making my own up?
Has anyone else made their own?

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30 Jul 2016 15:53 #4 by Hicker12 (Stephen Hickey)
Probably better of getting a system like what anthonyed suggested. You will most likely need a booster pump, I started with a 4 stage 75gpd and have upgraded it. Pre filter then 2 carbon block filters then RO membrane then into 2 10 inch DI chambers. TDS is 0 for about 3 - 4 months, depending on use.

Booster pump alone is 50 - 75 so 100 sterling is a good price.

Stephen.

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31 Jul 2016 13:35 #5 by Jonlate (Jon Late)
Maybe I will go ahead and order that one from the uk then.
I just tested my water from the water butt and it came in with a TDS of 12. My tap water is over 400!
Is that TDS of 12, ok to make saltwater from? Or should I try and get it lower by a ro system?

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31 Jul 2016 13:58 #6 by Hicker12 (Stephen Hickey)
There are a few retailers selling very similar systems, shop around ya might get a better deal. Maybe some of the marine guys can jump in here but i would imagine you need a tds of 0 or as close to it as you can for a marine tank. Fluctuations in your water quality can cause algae and stress your tank inhabitants.

With a good RO system at least you know your source water will always be the same. You will end up with a much more stable tank and parameters.

Stephen.

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02 Aug 2016 01:25 #7 by Sukahn (Shane Doorley)
As a rule of thumb for marine never let the TDS go above 35. At that stage it will start killing off corals and fish fairly quickly. RO systems when starting to run out will re letting mainly the heavy metals through which are toxic to your tank. Once you start getting a reading above 0 you should be really changing your membranes.

The site vyair is probably one of the cheapest palces to get an RO unit from, and they come with great customer service and a good warrenty on the system itself. The automated one looks good that i am probably going to buy one lol.

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