petplanet Posted September 9, 2005 Report Share Posted September 9, 2005 Ok, I am thinking about importing some. Just wondering what type (stages, brands, etc) people are using. Is it just the salties or are freshies using them as well? Tentative pricing would be: 4 Stage RO/DI 200 litre per day $270 4 Stage RO/DI 400 litre per day $425 6 Stage RO/DI 200 litre per day $350 6 Stage RO/DI 400 litre per day $700 Quote Link to comment Share on other sites More sharing options...
Warren Posted September 9, 2005 Report Share Posted September 9, 2005 Seems pretty reasonable to me... My 4 stage RO cost about $250 10 years ago and it only does 100L a day. Quote Link to comment Share on other sites More sharing options...
petplanet Posted September 9, 2005 Author Report Share Posted September 9, 2005 I am picking most people us 4 stage. There is even a seven stage. Did yours come with a pump or water tank as the ones I may get have 12-16 litre tanks that attach to collect the water. Quote Link to comment Share on other sites More sharing options...
Warren Posted September 9, 2005 Report Share Posted September 9, 2005 No tanks, just the RO. No pumps either... Quote Link to comment Share on other sites More sharing options...
madcookie Posted September 9, 2005 Report Share Posted September 9, 2005 Michael, That 'tentaive pricing' is that what you can land them at, or what you might resale them at? I would be quite interested in one 'at some stage'. I thought they were a prerequisite for Discus, but have now learned they are not. Breeding possibly, but not growing and maintaining. One thing I have been reading, is the use of a prefilter (usually charcoal carbon / activated carbon?) will remove many heavy metals etc before the RO - membrane(?) stage - which greatly increases the life span of the RO membrane. Is the prefilter included with 4 stage or 6 stage? Sorry for all the questions....you wouldnt know a good website for RO Plants would you? Quote Link to comment Share on other sites More sharing options...
Ira Posted September 9, 2005 Report Share Posted September 9, 2005 I'm thinking of maybe just a 3 stage... 2 sediment prefilters and the RO because I don't have to worry about chlorine. Quote Link to comment Share on other sites More sharing options...
chimera Posted September 9, 2005 Report Share Posted September 9, 2005 One thing I have been reading, is the use of a prefilter (usually charcoal carbon / activated carbon?) will remove many heavy metals etc before the RO - membrane(?) stage - which greatly increases the life span of the RO membrane. Is the prefilter included with 4 stage or 6 stage? yes, 4 stage is prefilter (wool or similar), carbon filter, RO then DI. michael, they would be well priced at that - i assume that is sale price. i've seen typical 4 stage usually go for around the $350 mark or higher, depending on make. 6 stage is perhaps overkill for nzl water. i have a tds meter on my 4 stage, water in is 75, water out is 0. Quote Link to comment Share on other sites More sharing options...
petplanet Posted September 10, 2005 Author Report Share Posted September 10, 2005 The four stage consists of: 1 - 1-micron pre-filter 2 - 1-micron carbon block filter 3 - RO TFC Membrane. 4 - 100% DI resin post filter The tentative pricing is what I would sell them for. They recommend replacing all the filters every 6-12 months. If you did 200 litres a day for six months that would be 0.7 cents a litre. Quote Link to comment Share on other sites More sharing options...
madcookie Posted September 10, 2005 Report Share Posted September 10, 2005 Hi Michael - If you do get these within the next two months - I can put my name down for a $270 one - could also make a deposit if you wanted, might help sway your decision to import...?....Maybe if a few others here offered to do this too???? I used to think a 'proper' RO plant was a 'huge' investment. This is now looking like the same dollars as a reasonable cannister filter. I'm in! Look forward to any thoughts you might have on this - can PM if preferred. Quote Link to comment Share on other sites More sharing options...
misnoma Posted September 10, 2005 Report Share Posted September 10, 2005 Yeah, I would most prob be keen for a $270 one as well. Quote Link to comment Share on other sites More sharing options...
petplanet Posted September 10, 2005 Author Report Share Posted September 10, 2005 I don't know how soon we could get them. About 14 day turn around at manufacturer, 2-4 week wait for sailing date, 3 weeks to get here. I would say within three months. Quote Link to comment Share on other sites More sharing options...
Pablo Posted September 11, 2005 Report Share Posted September 11, 2005 slightly off topic, would a R/O unit or an ozone izer? be more applicable to treat well water with a fair dose of iron in it, apparently, and a lot of algae which turns the water a rusty red colour, would obviously need some sort of pre filter and post filter? thinking of treating some of the farm water slowly and storing it in a container for the times when we are desperately short of rain water in our house tank, LIKE NOW!! ...what winter??. Thanks. Quote Link to comment Share on other sites More sharing options...
madcookie Posted September 11, 2005 Report Share Posted September 11, 2005 RO Water is the 'purest' water - but so pure it will not store well for very long...you might need to add chlorine? (never thought I'd mention that in these forums!) Also, WIll it be cost effective getting a pump to push the water thru an RO plant? Or....do you have a cliff on your farm, could maybe get away with a gravity feed system? Have been reading that the best RO plants, like the ones a ship can use to make drinking water out of (lightly-moderately) polluted sea water require 'significant' pressure to push the water thru the RO membrane... Quote Link to comment Share on other sites More sharing options...
Pablo Posted September 11, 2005 Report Share Posted September 11, 2005 Cheers madcookie, no cliffs in close proximity unfortunately, the cost is relative to getting a tanker load of water (of unknown origin and quality) at $300 a load plus the hassle of getting the tanker close enough to the house with all the trees restricting access, possibly look at treating enough water to deal with water changes in the fish tanks and a bit more for absolute essentials only, therefore smallish quantities. Do you know much about the ozone type purifiers? Quote Link to comment Share on other sites More sharing options...
madcookie Posted September 11, 2005 Report Share Posted September 11, 2005 Ozone purifiers - sorry not a thing except some salt tanks have them. You arent meaning UV purifiers (sterilisers!) are you? Quote Link to comment Share on other sites More sharing options...
Pablo Posted September 11, 2005 Report Share Posted September 11, 2005 No, heard there are some quite small units around that extract O3 (ozone) from the air and use it to; eliminate pathogenic germs,dissolve harmful chemicals and organic matter, decrease cod, bod and algae, process 3 ~ 5 litres / min. apparently don't put directly into tanks. used on spa pools instead of chlorine also?? Quote Link to comment Share on other sites More sharing options...
Pies Posted September 11, 2005 Report Share Posted September 11, 2005 Ozone is used by some in their tanks. The thing with RO/DI is its used to prevent any impurities entering the filtered water, not just killing it. Removes any metals etc as well as anything alive. Ozone would just kill it, leaving all those dead bugs in the water, as well as allowing any metals and minerals to stay. Does't sound ideal to me. Pie Quote Link to comment Share on other sites More sharing options...
Pablo Posted September 12, 2005 Report Share Posted September 12, 2005 Thanks Pies, I see now the difference, then I am interested, in more info on your proposed imports Michael. Quote Link to comment Share on other sites More sharing options...
petplanet Posted September 14, 2005 Author Report Share Posted September 14, 2005 Just went to the home show. RO units $600-$1000. Someone inthe middle is making serious $$$$. Quote Link to comment Share on other sites More sharing options...
madcookie Posted September 14, 2005 Report Share Posted September 14, 2005 Michael, that "someone" should be you! hehehehe, convinced yet? Quote Link to comment Share on other sites More sharing options...
Ira Posted September 14, 2005 Report Share Posted September 14, 2005 o, heard there are some quite small units around that extract O3 (ozone) from the air and use it to BTW, they don't extract ozone from the air, they create it using either an electrical arc or UV. Quote Link to comment Share on other sites More sharing options...
petplanet Posted September 14, 2005 Author Report Share Posted September 14, 2005 Yeah, I have convinced the company to let me do an initial order of 25 units. Just deciding what extras we need. Might bring in the extra bits you need to plumb them in. Could help people convince their better halves that it's money well spent. Think of all that great drinking water they can enjoy..... Quote Link to comment Share on other sites More sharing options...
madcookie Posted September 14, 2005 Report Share Posted September 14, 2005 Michael - great idea. Most people buying an RO plant are probably going to want it for more than just fish. Personally, the drinking water would be an added bonus. But, I suspect that for many others it will be the primary 'selling point' - especailly when getting bosses clearnace. :roll: Will you keep us posted - and would you give members here a 'first dip' on the units? Quote Link to comment Share on other sites More sharing options...
reef Posted September 14, 2005 Report Share Posted September 14, 2005 things to look at when getting before getting these filters petplanet. The old saying " Let The Buyer Beware" is very true when it comes to water filters as there are times that we are ashamed to be associated with this industry, the lies told by some are outrageous. The most important thing as far as the buyer is concerned is the cartridge size, the standard size for a normal system is 9-3/4" inches or 248mm when referring to the cartridge length. There are manufactures that rip people off, they do this by supplying a system at a reasonable price but manufacturing it with shorter housings and cartridges knowing that when the cartridges need changing they know you have no choice but to buy a replacement off them at high prices. If you do buy one of these systems you are also hoping that they stay in business and they don't change the models. All carbon cartridges will treat for the following chemical compounds, some will treat for higher for longer. Carbon cartridges with larger amounts of carbon will treat higher for longer, cartridges with a rating for 3,000 litres will fall well short of a carbon filter rated for 20,000 litres simply due to the amount of carbon material contained within the cartridge, also watch out for cartridges with slow flow rates, a carbon cartridge with a flow rate of 2 litres per minute will not be used by the consumer at that rate as it is too slow(15 seconds to fill a glass). Most persons have their filter system set to deliver around 3.5 litres per minute, with a cartridge rated at 2 litres per minute running at 3.5 litres per minute will result in incomplete treatment simply because the cartridge doesn't contain enough carbon to have sufficient contact time for effective treatment. There is no secret ingredient in cartridges from different manufacturers the only trick to watch out for is slow flow rates, this increases contact time and makes the cartridge look more effective than it really is and there are few people that would have the patience to use it at a flow rate of 2 litres per minute. Chemicals that carbon will treat for Alachlor, Atrazine, Benzene, Bromochloroacetonitrile2, Bromodichloromethane1, Bromoform1, Tetrachloride, Chlorobenzene, Chlorine, Chloroform1, Chlorodibromomethane1, Chloropicrin, 2,4-D, Dibromoacetonitrile2, DBCP, Dichloroacetonitrile2, o-Dichlorobenzene, p-Dichlorobenzene, 1,2-Dichloroethane, Pentachlorophenol, Simazine, Styrene, 1,1,2,2-Tetrachloroethane, Tetrachloroethylene, Toluene, 2,4,5-TP (Silvex), Tribromoacetic Acid, Trichloroacetonitrile2, 1,2,4-Trichlorobenzene, 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, Trichloroethylene, 1,1,1-Trichloro-2-Propanone3, 1Trihalomethanes, m-Xylene, p-Xylene, 1,1-Dichloroethylene, cis-1,2, Dichloroethylene, trans-1,2-Dichloroethylene, 1,1-Dichloro-2-Propanone3, 1,2-Dichloropropane, cis-1,3-Dichloropropylene, Dinoseb, Endrin, Ethylbenzene, EDB, 2Haloacetonitriles (HAN), 3Haloketones (HK), Heptachlor, Heptachlor Epoxide, Hexachlorobutadiene, Hexachlorocyclopentadiene, Lindane, Methoxychlor Quote Link to comment Share on other sites More sharing options...
chimera Posted September 14, 2005 Report Share Posted September 14, 2005 you could have just quoted this site reef... http://www.psifilters.com.au/Be%20Careful.htm Quote Link to comment Share on other sites More sharing options...
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