I have an rodi unit for drinking(ro) and for my fish(rodi). My water goes to a polishing filter(for odor and taste) afyer the ro membrane then goes to a 3gallon pressurize tank. I also connected a line that goes to my di resin cartridge(wihout any pressure from tank as i installed a one way valve. My question is it ok for fish water to go through the polishing filter then di? Thanks
Rodi question
- Thread starter cpballer
- Start date
mcgyvr
New member
Typically the "polishing" filter would be after the T so that "unpolished" water goes to the DI..
See here..
https://airwaterice.com/media/pdf_files/d/u/dual_home_reef_illustration.pdf
See here..
https://airwaterice.com/media/pdf_files/d/u/dual_home_reef_illustration.pdf
Opus123
Member
You can do it, but since it is adding things back to the RO water, this will mean the DI will just have to then remove it which will cause your DI to be used up much quicker, ie cost you more money. This is just from what I've read so no personal experience. How much quicker I unfortunately have no idea. Why don't you take a TDS reading before and after the polishing filter. If it is the same then maybe it isn't really adding back enough to worry about.
Opus123
Member
Of course I can't find it now, but I read one article that stated some polishing filters actually added back minerals to enhance the taste since most people are not used to drinking pure water and think it tastes weird. If the filter is just a carbon based filter then it won't add anything back and should be fine to use before the di filter.
mcgyvr
New member
In the professional bottled water process minerals are added back..
(Sodium Bicarbonate, etc...) for "taste"
Never seen a consumer level product that does so though.. Certainly could be..
But most "taste/odor" filters are just carbon blocks of one form or another.. coconut,etc..
So it ahould be ok not to put a t valve?. This is the polisher i havehttps://www.aquasafecanada.com/products/post-carbon-polishing-filter.html
mcgyvr
New member
Yeah.. Its ok to not...
But its also a simple 20 second fix to run it per the diagram I posted above..
In that diagram can i put the check valve on the tubing going into the pressure tank instead? Thanks
mcgyvr
New member
yes you can
Then i can add a T on the tubing going to the di to prevent tds creep right?
mcgyvr
New member
Well a T and some valves to create your own bypass valve.. A "T" alone won't cut it..
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