• Advertisement
RTAW Advertiser

RO/DI units

Just started out in the world of marine aquariums? Daunted by all the information, conflicting advice and just wondering what you should do? This is a forum for all of those that are new to the hobby to ask all and any beginner type of questions.

Moderators: Moderators, Mod: New to the Hobby

RO/DI units

Postby richy's reef » Sun 15 Mar, 2020 9:18 pm

Hi people, where is the best place to purchase a RO/DI 4 or 5 stage so i can make my own water? i have seen lots advertised online but they look like they are for drinking water, with a sink tap etc included for half the price of one that says for aquarium use. am i missing something

richy's reef
Hi, I am new around here!
Posts: 4
Joined: Fri 13 Mar, 2020 8:02 pm
Location: gold coast

Re: RO/DI units

Postby Basenji » Tue 17 Mar, 2020 9:31 pm

PSI Filters have long been a go-to supplier for RO/DI gear for RTAW members. https://www.psifilters.com.au/
I haven't spoken to him for a long time, but I remember calling the guy (Pete I think it was) back when I was purchasing and he was incredibly helpful with advising on options.
I note on their site that they do have aquarium rated systems as well as drinking water systems, but I couldn't tell you what the difference is.
My email
I can't change the direction of the wind, but I can adjust my sails to always reach my destination. - Jimmy Dean
My Tank Journals:--> 3x2 Project-->Thomas's Tank --> 4 foot display (retired) --> 2 foot Nano (retired)
User avatar
Too Much Time On My Hands Reefer
Posts: 8556
Images: 36
Joined: Wed 22 Jan, 2003 6:48 pm
Location: Lake Macquarie, NSW, Australia

Re: RO/DI units

Postby fsamir » Wed 25 Mar, 2020 4:15 pm

I've been getting my RO parts from this eBay seller, for over 5 years. They are responsive and have the best price around:
Franklin Dattein
User avatar
Bicentenary Reefer
NSW Reefer
RTAW Unregistered Business
Posts: 379
Joined: Sat 28 Jun, 2008 1:03 am
Location: Palm Beach, QLD, Australia

Re: RO/DI units

Postby richy's reef » Sun 29 Mar, 2020 10:46 pm

thanks guys
richy's reef
Hi, I am new around here!
Posts: 4
Joined: Fri 13 Mar, 2020 8:02 pm
Location: gold coast

Re: RO/DI units

Postby wrenfeathers » Fri 10 Apr, 2020 7:56 pm

yeah, +1 to psi filters
User avatar
Bicentenary Reefer
Posts: 342
Joined: Tue 13 Mar, 2007 10:38 pm
Location: Sydney - Hurstville area

Re: RO/DI units

Postby garcia45 » Thu 28 May, 2020 12:48 am

Given the boundaries of the displayed area and the main scale, the calculation of the cartographic grid and the segments of the meridian and parallel for the application of reference points is reduced to the calculation of the length of the lower and side frames, segments of the side frame and the lower frame, in the article https://www.light-it.net/blog/ultimate-guide-to-start-an-online-school/ is a ready-made formula.
Last edited by garcia45 on Thu 28 May, 2020 8:11 pm, edited 1 time in total.
Insert Business Name (required):, Insert Address (if required)
Insert Phone # (if required), Insert Website url (if required)
RTAW Reefer
RTAW Registered Business
Posts: 97
Joined: Tue 09 Jan, 2007 11:41 pm
Location: liverpool

Re: RO/DI units

Postby Macca_75 » Thu 28 May, 2020 2:32 pm

My PSI unit is still going strong some 15+ yrs. And they keep track of what filters I replace and when
Old Sea Dog Reefer
Posts: 2781
Images: 1
Joined: Mon 22 Mar, 2004 2:40 pm
Location: SE subrubs, Melbourne, Victoria, AU

Return to New to the Hobby

Who is online

Users browsing this forum: No registered users and 9 guests


Copyleft 2010 Marine Aquarium Societies of Australia Inc. (www.masa.asn.au)
Reefing the Australian Way is proudly brought to you by MASA Inc.