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#1
03-23-2006, 10:54 PM
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I have done 4 or 5 100% changes now (when I moved the tank or tore it down.) if you match your new water to your old waters peramiters then they shouldn't be any problem.. but if all you are doing is switching to RO water and that is the only reason why put your self through all that work.. do a 50% every week for a couple months (sounds like more work to me actualy
 ) ya go with the 100% and match the Alk, PH, salinity and temp to your old water and go for it.Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive. 
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#2
03-23-2006, 11:33 PM
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A fish-only tank with no fish?
Is the water foul? If not ... is there really a need for the water changeover? I guess I'm more of the philosophy of "If it aint broke don't fix it". Unless you knew the water had issues, I'd be inclined to just start using RO as the top off and make future water changes with the RO, but wouldn't see a need to do a 100% changeout just because I was switching to RO. Not knocking the 100% change though .. sometimes it's necessary.. But in this case I wouldn't automatically guess it would be necessary unless there are other factors to consider.
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-- Tony My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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#3
03-23-2006, 11:56 PM
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Something doesn't jive here.
In one sentence you say you want to move everything to a QT tank. In another sentence you say there is nothing in the tank. Which is it?  If the "everything" you refer to moving is Live Rock and/or Live Sand and you plan on moving it back after the water change, then I would do a 50% water change....but then....why move "everything" in the first place? Just some thoughts. Cheers  ,
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Mark.
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#4
03-24-2006, 02:51 AM
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There is no purpose in doing a 100% water change or even a 50 for that matter, if your tank has been running fine with np then just do a normal water change. Your substarte and rock will already be saturated with phospates and silica(think thats correct LOL) and doing a 100% water change will not change thos elvlv they will have to precipitate out over time.
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#6
03-24-2006, 04:11 AM
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I will just do a 50% change when I get my RO system on-line.
Sorry for not being clear I will have fish before I get the RO system, also I had fish in the tank last week. Thanks, Eric Last edited by Deathstar; 03-24-2006 at 04:16 AM.
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