RO/DI Filters? - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 7 Old 09-05-2011, 08:09 PM Thread Starter
RO/DI Filters?

Can someone tell me the difference between them, what aquariums need which type, and if possible model recommendations.

Thanks,
MetalArm3
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post #2 of 7 Old 09-05-2011, 10:24 PM
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The RO membrane is there for removal of bacteria, viruses, pathogens, endotoxins, metals, salts and other TDS.
The DI is normally used as a post filter for the membrane. It removes the remaining TDS by the ion exchange process using anion and cation resin beds. Its main function is to remove the rest of the salt and metal ions from the water.

These filters are generally used by people with SW tanks as the need for pure water is much more important. All the needed minerals and trace elements are replaced with the reef salt used to make the salt water for these tanks.

The Might Mite is a great little unit sold by Air, Water, Ice. It's just a little over $100 and is very reputable.
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post #3 of 7 Old 09-05-2011, 11:02 PM Thread Starter
Thanks for the good info and speedy response. One other quick question came to mind. Is there any filters that need to be regularly replaced?

I am doing a "virtual build" of a reef tank to figure the costs and items needed to make this happen. A RO/DI filter was one thing I missed.
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post #4 of 7 Old 09-05-2011, 11:23 PM
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Well...the media in the RO/DI filter needs replaced every so often. Best to get a TDS meter and test the water to determine when. It costs about $30-40 to replace all the filters.
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post #5 of 7 Old 09-06-2011, 02:38 PM
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You mention reef tank in post #3; if you are actually enquiring concerning a saltwater tank you should be in the saltwater section. The marine aquarists will see your question there.

I will move this thread if you confirm it is salt.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #6 of 7 Old 09-06-2011, 09:25 PM Thread Starter
Yea, You can move it. Does everything show up in the "new post" tab regardless of topic?

Thanks,
MetalArm3
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post #7 of 7 Old 09-07-2011, 09:41 AM
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Quote:
Originally Posted by MetalArm3 View Post
Yea, You can move it. Does everything show up in the "new post" tab regardless of topic?

Thanks,
MetalArm3
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Yes.

I moved the thread to Saltwater Aquarium Equipment.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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