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Old 10-31-2013, 07:15 PM   #1
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ro/di

When maintaining a saltwater aquarium is a ro/di unit a must have or is there other ways to use tap water mixed with salt to keep tank topped off
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Old 10-31-2013, 07:22 PM   #2
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I only use RO water, even to top off. I wouldn't take the chance of creating problems that could easily be avoided. Way too much money in the tank to loose it.
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Old 10-31-2013, 07:26 PM   #3
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Okay. So I will buy a ro/di unit.
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Old 10-31-2013, 07:47 PM   #4
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I buy water in town... 18 litre jugs. On my 50 gal I'd do about 1 jug a week on a water change. That's about 2.50 a week for tank water. Not always the most convienient but there are things higher on my 'to buy' list than a RO water unit.
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Old 10-31-2013, 08:04 PM   #5
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Oh cool. My tank is just a 45 corner tank. I got tank, filter, live rock and stand for 50 dollars. That 2.50 a jug for water will be better than 2 or 3 hundred for the system. I also found 160 gallon bucket of instant ocean salt on clearance for 7 dollars.
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Old 10-31-2013, 08:49 PM   #6
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I use distilled, chealest ive found it for is target for .86/gallon which is cheap. Obviously depending on size of tank would matter is you need to budget one in, you can get good deals on some units different websites im sure someone with a actual ro/di unit will chime in.....
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Old 10-31-2013, 08:53 PM   #7
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Thanks for the info. My tank is 45 gallons so hopefully won't have to use more than a gallon per week
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Old 10-31-2013, 09:50 PM   #8
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I stock up every sunday when i do the usual rounds with my 2yo.... Consists of LFS to see fish and target for distilled water.... Exciting life haha

I have a 30 with temp around 80 because of temps in house with the top closed up for the most part and can add half gallon a day in some cases
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Old 10-31-2013, 10:35 PM   #9
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I 45g tank will need about 5g a week for water changes and maybe another 2g for topoffs.
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Old 11-01-2013, 06:59 AM   #10
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7 gallons a week then. Might be better to invest in the unit. Thanks for the info
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