Is it safe to add cold water from tap to tank straight away?

Discussion in 'General Planted Tank Discussions' started by aaronnorth, 21 May 2008.

  1. aaronnorth

    aaronnorth Member

    Messages:
    3,955
    Location:
    worksop, nottinghamshire
    Is it safe to add cold water straight from the tap to the tank via a hose pipe? Or i could warm it slightly so it isn't a massive difference, i will be keeping malawi cichlids @ 25C.

    It will be quicker to fill up that's all.

    Thanks, Aaron
     
  2. Ed Seeley

    Ed Seeley Member

    Messages:
    3,262
    Location:
    Nottingham
    You should be fine. The only time I've ever had problems adding cold water was when I did a 50% water change on my nano using RO water from the butt in my garage in January year! The fish all went comatose, but then perked up as soon as I put them into warm water! None died or even got any dieases! Just make sure you don't chill your fish too much and you add a dechlorinator to the tank to neutralise chlorine and chloramine.
     
  3. Voo

    Voo Member

    Messages:
    185
    Location:
    Lincs
    I've used cold tap water for a while now with no problems. With summer coming i dont think it'll be a problem at all.

    I think by lowering the temperature of the tank slightly it can actually trigger some fish to spawn?
     
  4. Ed Seeley

    Ed Seeley Member

    Messages:
    3,262
    Location:
    Nottingham
    It can, but not Malawis who come from a very stable lake.
     
  5. Graeme Edwards

    Graeme Edwards Founder Staff Member

    Messages:
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    Location:
    Wirral/Chester Cheshire.
    I use a hose from my kitchen tap. I bought a connection thing ( dont know what its called ) so that it would fit the mixer tap. I get the tap running to the right temp, then click the hose on. In the tank and the end of the hose, I add my water conditioner. Everything seems very happy with me doing this, so im happy to carry on doing it.

    Graeme.
     
  6. aaronnorth

    aaronnorth Member

    Messages:
    3,955
    Location:
    worksop, nottinghamshire
    I was going to get the tap up to a warmer temp, i'll look out for them, any idea where you got it from?

    Thanks guys.
     
  7. LondonDragon

    LondonDragon Administrator Staff Member

    Messages:
    10,271
    Location:
    London
    I always take the themometer and get the running tap water to be roughly the same temp as the tank, never had any problems doing that.
     
  8. a1Matt

    a1Matt Member

    Messages:
    2,521
    Location:
    Bromley
    I bought a showerhead attachment (from Woolworths or Superdrug) cost about £3, then cut the end off of it and put an eheim double tap on it. Connected the other end of the eheim to some siphon tubing.

    I then use it the same way as Graeme, getting the water up to temp and then joining the ends together. I also use it to drain the tank as well.

    I have taken the tank water from 25 down to 20 with no adverse effects on the fish, although I usually try to get the temp as close as I can. I have read elsewhere that a bit colder does no harm, but a bit warmer does (especially to shrimp apaprently).
     
  9. LondonDragon

    LondonDragon Administrator Staff Member

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    10,271
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    London
  10. aaronnorth

    aaronnorth Member

    Messages:
    3,955
    Location:
    worksop, nottinghamshire
    Thanks for that, will the following equipment be ok for a simple fitting:

    tap connector (male end) - female connected to tap - hosepipe to female - simple nozzle to shut off while i am at tank!
     
  11. a1Matt

    a1Matt Member

    Messages:
    2,521
    Location:
    Bromley
    that sounds good to me.

    If you can get the tap end lower than the tank end you can use it as a siphon to drain the tank as well.
    Mine takes 15min to drain 80L over a 10metre length of tubing into my bath.
    Then about 3 min to fill up again.
    Easy Peasey!
     
  12. SuperColey1

    SuperColey1 Member

    Messages:
    2,668
    Location:
    Lincoln UK
    I remove 20% (2 buckets) each saturday and the water that comes out is 26ºC. No idea what the temperature of the tap water going in is but its from the cold tap. Water temp in the tank goes down to about 22ºC. Fish are still alive, show no stress, breeding quite happily.

    In the wild there will be fluctuations in the water temperature (not as quickly) but night temps will be cooler than day etc.

    I don't mention my cold water changes on some forums because of the old school 'you must match the temps' theories and I get peeved by the 'animal abuse' comments. lol

    I have pitbull plecs and bolivian rams breeding regularly (tank ful of carniovores means no survivors) so I think it proves they are all fine and dandy.

    I wouldn't do full cold water changesif I was doing 50%EI changes.

    Andy
     
  13. a1Matt

    a1Matt Member

    Messages:
    2,521
    Location:
    Bromley
    That is disgraceful I can't believe you put your fish through that :wideyed:

    Only joking :D It is actually quite refreshing to hear that it can be done with the fish being OK about it. After this post started a couple of weeks back, I have been a bit more slack aboot matching temperatures (dropping up to 5deg C with 50-60% water changes) and all my fish are doing fine. My hydor heater is 300W in a 160L tank so brings the temp back up quite quickly.
     
  14. aaronnorth

    aaronnorth Member

    Messages:
    3,955
    Location:
    worksop, nottinghamshire
    I have all the equipment set up but i haven't tried it yet, it will be used at the weekend on my 60l and i am setting up a malawi tank so the 180l needs fillingup.
     
  15. JamesM

    JamesM Member

    Messages:
    1,913
    Location:
    The BIG End, South Wales
    Adding cold water can induce breeding and/or shedding with shrimp, not sure about fish though.... I too add water straight from the cold tap when changing up to 20%, but anything more I add mix in hot water from the tap.
     
  16. rocafreestyler

    rocafreestyler Newly Registered

    Messages:
    6
    Hi

    I am new here - looks like a great site

    I use to do all my water changes using the hot water tap and cold water tap and matching the temp before filling up. Until I was advised by a guy at my LFS a few weeks back that I was "killing my fish!" by using the hot water tap, as the water is coming from a tank rather than direct from the mains.

    I could see his point as they do say that you shouldn't drink or brush your teeth with water from the hot tank. I now just put cold water in direct from the mains and have had no side effects from this. As i don't want to be accused of fish murder again!

    But I am still a little worried about freezing the little blighters especially in the winter months. How do you guys feel about this?

    Cheers
     
  17. Joecoral

    Joecoral Member

    Messages:
    694
    Location:
    Neath, South Wales
    I always do cold water changes. Let the cold tap run for a min or so, then through a hose pipe straight from tap to tank, add the dechlor to the tank as waters goin in, never had any problems, fish all happy and healthy
     
  18. john starkey

    john starkey Member

    Messages:
    1,593
    Location:
    worcester
    Hi all,i change 50g every week and i use cold water through a hose pipe straight from the garden tap during summer i find this is no problem,During winter when the tap water is really cold i do add some hot water from the kettle after boiling of course, i would not advise using hot water from the tap because because it can contain high levels of total disolved solids (tds) and i have been doing this every week for ten months and i havent lost any fish at all,regards john
     
  19. TDI-line

    TDI-line Member

    Messages:
    1,535
    Location:
    Yaxley, Peterborough
    Hi John,

    how do you add any de-chlorinator?
     
  20. aaronnorth

    aaronnorth Member

    Messages:
    3,955
    Location:
    worksop, nottinghamshire
    How do you add the hot water? After it has cooled downa bit?
     

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