Anthony Posted October 7, 2005 Report Share Posted October 7, 2005 Are RO/DI units necessary to have on marine tanks do you have to have them? what do they do? how much are they and where can you get them from? Quote Link to comment Share on other sites More sharing options...
cracker Posted October 7, 2005 Report Share Posted October 7, 2005 I am Rural and use rain water...I use a Microlene filter only designed for tank water.....My tank loves it, including SPS. Suburbs....different story....Chimera would be more up on it than I.... Quote Link to comment Share on other sites More sharing options...
Pies Posted October 7, 2005 Report Share Posted October 7, 2005 Its not a case of if RO/DI water is nessessary, its more a case of is water quality of concern in your tank. Qualify water, quality way of life for your animals. There are people not using RO/DI who are doing fine as far as I am aware. To me, its just another variable I don't have to contend with. Got hair algae? Hows your water. Got Diatoms? Hows your water. Got RTN. Hows your water. Got colour? Hows your water. If you water filter saves one fish and 3 corals over a 5 year period its not too far off having paid for itself. Pie Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 7, 2005 Author Report Share Posted October 7, 2005 so should i look at getting one or not? cheers Quote Link to comment Share on other sites More sharing options...
Pies Posted October 7, 2005 Report Share Posted October 7, 2005 Hrmmmm, I don't know how to answer that. If money is no object then yes, why not. I would certanly get myself a 1micron and 1/2micron carbon block filter. You could add RO or DI or both later if you decided it was nessessary. DI is cheaper than RO, but they do slightly different things, and the DI media will be used up much faster if its inline with a RO unit. Pie Quote Link to comment Share on other sites More sharing options...
cracker Posted October 7, 2005 Report Share Posted October 7, 2005 If youre in the suburbs...I would say yes. Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 7, 2005 Author Report Share Posted October 7, 2005 ok and how much will one cost pies just a single unit? Quote Link to comment Share on other sites More sharing options...
Pies Posted October 7, 2005 Report Share Posted October 7, 2005 Not sure, I would say about $60.00 for the canister, and $10 for the 1 micon and $22 for the 1/2 micron w/carbon. so thats $150.00 + say $10 in plumbing, and another $40 if you need a saddle valve. Add the RO/DI later. I will have a very simple DI filer, semi DIY, you can have for say $20.00 to get you going. But you will have to feed media into it, but we have a source of DI resin. an RO unit will prob cost $300+. Pie Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 7, 2005 Author Report Share Posted October 7, 2005 thanks pies can i always ad one on later? Quote Link to comment Share on other sites More sharing options...
Pies Posted October 7, 2005 Report Share Posted October 7, 2005 Yep, very modular, all the connects them together is a little bit of pipe. Pie Quote Link to comment Share on other sites More sharing options...
misnoma Posted October 7, 2005 Report Share Posted October 7, 2005 Pies: where to get the 1 / 1/2 micron block filter bits? Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 7, 2005 Author Report Share Posted October 7, 2005 ok cheers pies ill look at adding one later Quote Link to comment Share on other sites More sharing options...
Pies Posted October 7, 2005 Report Share Posted October 7, 2005 Misnoma - I have brought mine from Microline, they come in 2 sorts, 1 '6 months' and 1 '12 months'. I always buy the 12 month one, because i'm lazy. I have also seen them an Bunnings but they were much more expensive (been at least 18 months since I looked at Microline though). Pie Quote Link to comment Share on other sites More sharing options...
Ira Posted October 7, 2005 Report Share Posted October 7, 2005 DI is cheaper than RO, but they do slightly different things, and the DI media will be used up much faster if its inline with a RO unit. The DI will be used up more SLOWLY if it's after an RO unit because the RO will remove 99%ish of the impurities so far fewer hit the DI. I guess probably would last at least 10 times as long? Guesstimate. Just thought I should comment on that in case Anthony didn't realise you didn't type what you meant. Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 7, 2005 Author Report Share Posted October 7, 2005 ira do you have an RO/DI? Quote Link to comment Share on other sites More sharing options...
Ira Posted October 7, 2005 Report Share Posted October 7, 2005 Nope. I have a sediment filter and a likely looooong used up DI. Quote Link to comment Share on other sites More sharing options...
misnoma Posted October 7, 2005 Report Share Posted October 7, 2005 Nope. I have a sediment filter and a likely looooong used up DI. You might also want to mention you generally use NSW, and therefore have less of a need Quote Link to comment Share on other sites More sharing options...
Ira Posted October 7, 2005 Report Share Posted October 7, 2005 Nah, I'm switching to ASW for a while to give it a try. But, I think I'm going to be running about as much water into the tank for the topoff this sumer as I will be for ASW. 6Lish/day vs 7L a day water changes(Call it 100L every other week) that's assuming I don't get slack and do fewer water changes(Which I will.) Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 7, 2005 Author Report Share Posted October 7, 2005 simon are you using ASW or NSW? Quote Link to comment Share on other sites More sharing options...
misnoma Posted October 7, 2005 Report Share Posted October 7, 2005 I used ASW to fill the tank initially, going to do a waterchange this weekend, and I'm almost tempted to go find some NSW to do it with. Given I'm Auckland CBD I'm sure the tapwater isn't the best (HAH) for going straight into the tank, it does have 0 Nitrates and Phosphates which is a plus. Sometime in the future (oi petplanet!) I'll hopefully get a RO/DI unit - that way I know I'm not putting things into the tank that I don't know about. Quote Link to comment Share on other sites More sharing options...
Anthony Posted October 7, 2005 Author Report Share Posted October 7, 2005 how much is the ASW salt? Quote Link to comment Share on other sites More sharing options...
misnoma Posted October 7, 2005 Report Share Posted October 7, 2005 Budget for $0.17 - $0.20/Litre Quote Link to comment Share on other sites More sharing options...
slappers Posted October 7, 2005 Report Share Posted October 7, 2005 i use red sea makes 120ltrs for $38 might be on the expensive side?? not really sure never bothered looking around Quote Link to comment Share on other sites More sharing options...
misnoma Posted October 7, 2005 Report Share Posted October 7, 2005 Yeah... $0.31/L is a bit pricy If you can, buy more salt at a time, keeps the cost down (i.e. 20-25kg at a time or more) Quote Link to comment Share on other sites More sharing options...
slappers Posted October 7, 2005 Report Share Posted October 7, 2005 i will start looking into that once i get the new one up and running not sure if i have seen 20/25kg in hams i will go and see murry at pet city today Quote Link to comment Share on other sites More sharing options...
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