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  1. #1
    Senior Member
    Join Date
    Mar 2006
    Ottawa, Ontario

    How long after mixing water

    Never saw anything about this in any books and I am wondering how long people wait after mixing up water for changes before actually changing the water. I have been agitating RO/DI water with the salt using a powerhead for 24 hours before doing the water change.

  2. #2
    Senior Member carrhd's Avatar
    Join Date
    Nov 2005
    Spencerville, Ontario
    Quote Originally Posted by fish
    I am wondering how long people wait after mixing up water for changes before actually changing the water.
    It takes me about 45 seconds to get the water from the kitchen where I mix it to the aquarium. It may not be right but that's how I've been doing it for 20 years.

    220G mixed reef main, 30 G (3 x 10) brood/grow-out, 25 G secondary, 6 G frag with shared sump

    Return Pump: Iwaki MD55RLT
    Water Movement: Tunze Turbelle Stream 6060, 4 x MaxiJet 1200
    Lighting: 60" Outer Orbit dual 250 W 10k HQI and quad 48" T5HO Actinic
    Skimmer: Precision Marine Bullet-2 with Iwaki MD55RLT, WC610 waste collector, and gate valve

    Experience: Fresh since 1976 - Marine since 1987


  3. #3
    Senior Member DuuhMojo's Avatar
    Join Date
    Nov 2005
    I mix my water and wait 24 hours before adding.

    40G Tank | 150 watt Jager Heater | Super Skimmer 3000 | Maxi-Jet x2 1200 | 192W Total Lighting w/Actinic | 20LBS Live Rock | 50LBS Aragonite | 10 various snails | 13 Blue Legged Hermit Crabs | 2 Ocellaris Clownfish | 1 Hi Fin Red Banded Goby | 1 FireFish Goby | 1 Flame Angel | 1 Kid | 1 Wife | 1 Cat

  4. #4
    Senior Member pwall's Avatar
    Join Date
    Nov 2004
    For me, I let it mix for at least 24hrs.

    I have a 23g container that is always full of new salt water (mj400 provides circulation). Then when I want salt water, it's there. But you have to have 'extra' space for this.
    Ottawa (Orleans), Ontario
    Yahoo IM: pwallnfld

  5. #5
    Join Date
    Apr 2005
    I am like hank, sink to tank in under 30 seconds. I am FOWLR so do not know this may impact coral.

  6. #6
    Senior Member mickyfin's Avatar
    Join Date
    Jun 2004
    I always wait 24 hours to aerate it really well, stabalize PH and buffer ALK as necessary (IO salt).

    If I put it in too quick, the undisolved salt really makes my corals mad
    Don't Panic Feel free to visit my blog -> Internet Tough Guy.

  7. #7
    Senior Member Swimfins's Avatar
    Join Date
    Aug 2005
    I use IO reef crystals and mix it up, in an hour or so if the water looks clear I test for salinity then go ahead. No issues todate.
    Canons shooting coconut creme
    40 guns in a steady stream. :coolmad:

  8. #8
    Moderator Krugar's Avatar
    Join Date
    Jun 2004
    I have to mix the day before. Basically day one is let the RO water dribble into a garbage pail onto a pile of dry salt. The pressurised tank gives me just enough RO to get the pump wet enough to run it & start mixing it up.

    By the time it full, I'm usually done for the day so it gets a heater over night & the partial happens sometime the next day. Or two if something else comes up. Okay maybe 3, I've got kids

    There is nothing so permanent as a temporary measure.

  9. #9
    Senior Member
    Join Date
    Jul 2004
    I fill my drum (~50G) in a day or so, then the next day I add salt, then I wait for at least other day or two (sometime more) before I use that salt.

    I do think that you need at least a day to get the water aerated properly.

    I also think that adding the salt before the water is pretty bad... The concentration of good ions like calcium and carbonate would be so high when you have only a small amount of water that they will precipitate (sp?) then they would be much harder to dissolve.

    I'm pretty suprised to hear that you don't wait any longer before you do your wc...


  10. #10
    Senior Member
    Join Date
    Apr 2005
    Add salt into 5L distilled water. Mix for 10 minutes with a magnetic strirrer, check salinity and in it goes (slowly front of a power head). My 75 g tank is mainly SPS and clams and have yet to see any adverse reaction.

    I've made many, many, many simple and complex chemical reagents in the lab, rarely do you ever mix a reagent O/N (unless it's not completely dissolved before you have to leave for home). Once the solute is dissolved it ready to use. I apply the same principal to my salt water changes
    Ignorance more frequently begets confidence than does knowledge. --
    Charles Darwin

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