Tagged on to my RO water thread... anyone use deionized water???

[Magnum Man]

again, still trying to learn, I see deionizer filters that sell for just slightly less than RO filters ( not sweating the cost right now )
trying to read up on Deionized water...

Warning, this is a commercial ad for Deionizer filters, but they explain actually what deionized water is... ( it sounds almost better for aquariums??? ) the flow through is about the same, but it doesn't look like you get one good gallon of water out of every 3 ( which looks typical for RO units ), no drain line needed... BTW... there are much cheaper Deionizer filters for sale on Amazon... most of which look like they are tailored to car washing...

Deionization Water vs Distilled Water - Knowing The Difference

Deionized water and Distilled water are both types of extremely pure water, but they are produced in two distinctly different ways. Depending on the source water, distilled water can be more pure than deionized water - but that doesn't necessarily mean that it's better. There are pros an

www.uswatersystems.com

anyone use or tried Deionized water, I think it would remove a lot of my water hardness??? maybe it's not safe for aquariums ( the resin cartridge types??? )

this is one I found in just a couple minutes search...

Amazon.com

www.amazon.com

any reply's welcomed

 

[Magnum Man]

this link actually talks about using deionized water in aquariums...

The Best Water for Your Aquarium - Longs Ecowater

Home aquariums can enhance your home aesthetic and mood. You know how important it is that your fish have a beneficial aquatic environment so they stay healthy for as long as possible. Selecting a suitable water source for your fish tank can ensure that your fish thrive and enhance your daily...

longsecowater.com

"Deionized water is free from contaminants and harmful minerals, so it is excellent for your aquarium. The denotation process can filter out more pollutants than reverse osmosis. It can also remove some good nutrients, and you may need to remineralize water before adding it to your fish tank."

 

[Magnum Man]

This may be overly complicated ( I can't say I grasped it all on my 1st reading but it does explain the difficulties of changing & holding an exact PH reading...

dang... can't copy a link

 

[seangee]

DI on its own is expensive as the resin gets exhausted really quickly - I have tried this in the past. Also you get no warning, one day your water is fine and the next its terrible (worse than what comes out of the tap. It is for this reason that DI normally follows RO in the process so you are putting almost pure water through the DI resin. But for tropical fish almost pure is good enough. My filter is RODI but when the DI was exhausted I just replaced it with a carbon post filter. Typically my TDS is <10ppm after RO, I can't remember if its 200 or 2000 before.

 

[Back in the fold]

What @seangee said . I wondered about DI too and found out the same thing . The resin gets worn out fast and is expensive to replace . Really expensive !

 

[StevenF]

"Deionized water is free from contaminants and harmful minerals, so it is excellent for your aquarium. The denotation process can filter out more pollutants than reverse osmosis. It can also remove some good nutrients, and you may need to remineralize water before adding it to your fish tank."

DI filters remove all minerals good and bad from the water. GH, KH should be zero Wither GH plants will not grow. It will also remove all nutrients in fertilizers. And minerals that are good for animals, such as sodium and iodine, are also more moved. In short DI filters removes EVERYTHING from theater.

Alsocommercial fertilizers assume your water will have some of the nutrients plants need. Sa a result most fertilizers don't work well in 100% RO and DI water. The water must be remineralized. But commercial Remineralizing products don't privide Sodium Iodine and several other nutrients animals need. I don't recommend using 100% or DI However. if you want to mix DI or RO water with regular tap water that is OK