shinobi9119
Active Member
Looking for a good RO unit, does anybody have any recommendations because to me they all look the same. thanx
RO unit help
- Thread starter shinobi9119
- Start date
mr. limpid
Active Member
I have the Coralife 50gal unit w/ the DI canister. I like it saves me money buying water. I use about 1,164 gal a year and filters cost about $337 a year to replace. Which is about .28 cents a gal. which most lfs charge .50 cents gal. and you have have containers to haul it home. Also I have a well so I only pay to electric to pump the water. It takes abut 3gal. to make one gal. of RO water. Just look into the cost of replacing the filters. And the DI canister is a must for good RO water. Also TDS meter is good to have to test your RO water. I hope this helps.
florida joe
Well-Known Member
Different RO units feature a different number of filtration stages, generally
between 2 and 4.
* 2-stage RO units are light and compact, making them easy to store and move around. They contain a small inline pre-filter and the RO membrane. A good choice when space is limited, 2-stage units represent good value at an economical price.
* 3-stage RO units are larger, and contain one or more large carbon or sediment pre-filters to protect the delicate membranes. They are high quality, excellent choices for regular use, and tend to last longer than the 2-stage units.
* 4-stage RO units include an additional final step of deionization, taking the 3-stage unit to a higher level. The deionization unit removes the small amount of contaminants remaining, filtering the water to greater than 99.9%. This is the highest level of filtration available.
There are several different types of membranes in today's RO units. Your decision may be partly based on whether or not your tap water contains chlorine.
* CTA - Cellulose Tri-Acetate membranes are organic and have a slightly lower removal rate of 88-94%. Because they are organic, use them only with chlorinated water (water from a municipal source) in order to keep them clean and free of damaging molds and bacteria. They do not filter out chlorine, so allow the chlorine to dissipate out of filtered water, or treat it with a chemical dechlorinator.
* TFC - Thin Film Composite membranes are synthetic and remove between 94-98%. These units contain a carbon pre-filter to protect the membrane from chlorine damage. Use these membranes for water with or without chlorine.
* High Removal Membranes are synthetic membranes with much higher removal rates, between 97.5-99%, and are especially adept at removing silicates. These units also contain a carbon pre-filter to protect the membrane from chlorine damage. Use these membranes for water with or without chlorine. I use a coralife pure-flow II 4 stage ro/di and it gives me about 50 gallons a day if need be
between 2 and 4.
* 2-stage RO units are light and compact, making them easy to store and move around. They contain a small inline pre-filter and the RO membrane. A good choice when space is limited, 2-stage units represent good value at an economical price.
* 3-stage RO units are larger, and contain one or more large carbon or sediment pre-filters to protect the delicate membranes. They are high quality, excellent choices for regular use, and tend to last longer than the 2-stage units.
* 4-stage RO units include an additional final step of deionization, taking the 3-stage unit to a higher level. The deionization unit removes the small amount of contaminants remaining, filtering the water to greater than 99.9%. This is the highest level of filtration available.
There are several different types of membranes in today's RO units. Your decision may be partly based on whether or not your tap water contains chlorine.
* CTA - Cellulose Tri-Acetate membranes are organic and have a slightly lower removal rate of 88-94%. Because they are organic, use them only with chlorinated water (water from a municipal source) in order to keep them clean and free of damaging molds and bacteria. They do not filter out chlorine, so allow the chlorine to dissipate out of filtered water, or treat it with a chemical dechlorinator.
* TFC - Thin Film Composite membranes are synthetic and remove between 94-98%. These units contain a carbon pre-filter to protect the membrane from chlorine damage. Use these membranes for water with or without chlorine.
* High Removal Membranes are synthetic membranes with much higher removal rates, between 97.5-99%, and are especially adept at removing silicates. These units also contain a carbon pre-filter to protect the membrane from chlorine damage. Use these membranes for water with or without chlorine. I use a coralife pure-flow II 4 stage ro/di and it gives me about 50 gallons a day if need be