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Old 10-19-2006, 05:11 AM
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Water question

I've been using tap water in my 120g system. I just purchased a RO/DI unit, how long will it take for my system to be completely ro/di water with 10% water change every week? No sump so just 120g
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Old 10-19-2006, 05:33 AM
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120(12)/.1*.1(X)=120~0.1/120 figure out what X is will determine how many WC is needed.
I aint no mathamethical genius but i dont think u will competely replace all 120g with ro/di water since each wc will only dilute 10% less tank water with ro/di water. as long as u keep improving the water condition of your tank with each water change, your tank should continue to do better.
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Old 10-19-2006, 09:07 AM
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Exactly what reefman said (not necessarily the math part ). Even if you change 100,000 gallons of water you'll never be at 100% RO/DI. You will continuously dilute it and it will keep getting better for your system though.

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Old 10-20-2006, 10:50 PM
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1 day w/100% wc
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Old 10-20-2006, 11:24 PM
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Here is a water change calculator
based on your system it will take slightly more than 16 weeks at 12gallons per week water changed
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Old 10-23-2006, 01:02 AM
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Quote:
Originally Posted by bigbris1 View Post
1 day w/100% wc

That's the only way
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Old 10-23-2006, 04:31 AM
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Drain it and fill it! Nice calculator!
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