raising salt levels

Discussion in 'Water Parameters and Additives' started by Steve1975, 14 Oct 2012.

  1. Steve1975

    Steve1975

    Joined:
    25 May 2012
    Posts:
    41
    Likes Received:
    0
    Location:
    Cape Town
    hi, i left my R0 unit on by mistake and went out, came home to a slightly flooded lounge. Problem no is that my salt level is sitting at 1.016. how can i go about raising this level back to 1,025 without stressing my fish any more?
     
  2. AdS Guest




    to hide all adverts.
  3. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    Very VERY slowly, Steve. Do water changes with water that are slightly more salty (higher salinity), ie. 1.030....

    Keep the "old water". No use in wasting! ;)
     
  4. Steve1975

    Steve1975 Thread Starter

    Joined:
    25 May 2012
    Posts:
    41
    Likes Received:
    0
    Location:
    Cape Town
    k cool i was on the right track, i have fresh water at correct temp and 1,030 so spot on, how slow is slow...0.001 per day or can i do more?
     
  5. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    No :) you can do more ;)

    The corals and inverts are a LOT more stressed out by salinity changes than the fish.

    What's the size of your tank? Then I tell you how much water to change at a time and what frequency?
     
  6. Perky Pets

    Perky Pets Sponsor

    Joined:
    24 Jun 2010
    Posts:
    2,807
    Likes Received:
    116
    Location:
    Cape Town
    Just an idea - ive done it before , but dont know if there are problems in recomending it...

    I put 200 grams of salt in the first chamber of the drip filter every 6 hours untill the salinaty was correct...
    it should take a white for the salt to desolve , so the change of salinaty is slowed even more than by doing a higher salt water change.

    This should work fine if the tank just need a raise in salinaty , but water changes are always usefull !.

    D
     
    Last edited by a moderator: 14 Oct 2012
  7. Steve1975

    Steve1975 Thread Starter

    Joined:
    25 May 2012
    Posts:
    41
    Likes Received:
    0
    Location:
    Cape Town
    k i have a 1.8x700x600, i have a few zoas and 2 torch corals, fish i only have a regal and lipstick tang, blenny and a clown. also some shrimps and a hermit. Tank has been running for bout 6 months now.
     
  8. Steve1975

    Steve1975 Thread Starter

    Joined:
    25 May 2012
    Posts:
    41
    Likes Received:
    0
    Location:
    Cape Town
    cool thanx david, problem is i used all my salt to mix fresh batch...lol. I need to visit u guys again!
     
  9. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    OK Steve - nice size tank. No problems with the water volume then. Unfortunately getting the salinity higher in this size tank will take longer.

    So - change 10 litre of water every hour, measure 20 minutes after the water change - to check the salinity.

    Repeat until your water salinity is back to the 1.024-1.026 levels.

    IF you cannot get the salinity back until these levels - you can either use some sea water (as an emergency) or leave it for a while until you have some more salt. You will have to switch off the RO unit, and NOT top up with RO water, until the salinity is back to normal.

    You can then - if you have run out of salt water, leave the tank that the water evaporation automatically increase the salinity, and replace the water with that of which you took out of the tank now, during these water changes.
     
  10. Steve1975

    Steve1975 Thread Starter

    Joined:
    25 May 2012
    Posts:
    41
    Likes Received:
    0
    Location:
    Cape Town
    okay thank you...i have 200lt saltwater mix so i think ill have enough. thank for all the help. i have added this 1st 10lt already. gonna b a long day at the office!!
     
  11. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    OK here is the maths if you are interested.

    SG 1.016 20c = salinity 21.8
    SG 1.030 20c = salinity 40.3

    750l water at salinity 21.8 = 16.35kg salt
    550l water at salinity 21.8 = 11990gk salt
    200l water at salinity 40.3 = 8,060kg salt

    Salinity after 200l water change
    550 x 21.8 = 11,990
    +
    200 x 40.3 =8060
    = 20050
    Salinity = 20050 / 750 = Salinity 26.73 = sg 1.0195 20c

    The 200l water change will only lift the sg 0.003

    I would just do 100 liter water changes and which will lift the SG 0.0015 20c per change.
     
    Last edited: 16 Oct 2012
  12. Albert Terego

    Albert Terego

    Joined:
    19 May 2008
    Posts:
    599
    Likes Received:
    6
    Location:
    Randburg, Johannesburg
    If I read correctly you are going to need to add about 10kg of salt in total to your current water volume to get to the desired SG.

    Split this quantity into 10 doses (1kg each), dissolve a dose in the minimum quantity of RO water and add slowly (over say 15 minutes to your sump by the return pump)

    Do this about every 4 hours until all the salt has been added - obviously check salinity as you go along.
     
  13. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    Yup, if you keep using the old water +- 10kg salt
    If you throw the old water away +- 26kg

    You are going to need 8 x 100l water changes at SG 1.030 20c

    1 SG 1.0175 salinity 24.26
    2 SG 1.0195 salinity 26.40
    3 SG 1.021 salinity 28.26
    4 SG 1.022 salinity 29.86
    5 SG 1.023 salinity 31.25
    6 SG 1.024 salinity 32.46
    7 SG 1.025 salinity 33.50
    8 SG 1.026 salinity 35.19
     
    jacquesb likes this.
  14. jacquesb

    jacquesb Retired Moderator

    Joined:
    29 May 2007
    Posts:
    17,868
    Likes Received:
    69
    Location:
    Cape Town
    Many thanks for the technical answer and response Keith!
     
  15. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    :thumbup:
     
  16. Albert Terego

    Albert Terego

    Joined:
    19 May 2008
    Posts:
    599
    Likes Received:
    6
    Location:
    Randburg, Johannesburg

    From the salinity levels you must have overflowed about 300litres of water Was it really so much? My old RO unit could do about 150litres a day if I was lucky.

    How long were you out for?
     
  17. Steve1975

    Steve1975 Thread Starter

    Joined:
    25 May 2012
    Posts:
    41
    Likes Received:
    0
    Location:
    Cape Town
    yes there was plenty of water on the floor, not sure bout 300l though. Nemos Janitor, your math was spot on...200lt only raised to 1.020. Think my best bet here will be to mix 1kg salt mix at a time and add to my sump as per Albert Terego's suggestion. Im also i bit stumped as to how it got this low...was treating with paraguard at the time, would this have affected salt levels in any way?
     
  18. Steve1975

    Steve1975 Thread Starter

    Joined:
    25 May 2012
    Posts:
    41
    Likes Received:
    0
    Location:
    Cape Town
    So far i have thankfully not lost any inhabitants, only my hermit is not as active as he normally is. Thanx for all the info here, i have saved alot of it for future reference.
     
  19. Nemos Janitor

    Nemos Janitor

    Joined:
    7 Feb 2009
    Posts:
    8,384
    Likes Received:
    286
    Location:
    Joe's Mountain
    Last edited by a moderator: 26 Nov 2015
  20. viper357

    viper357 Admin MASA Contributor

    Joined:
    4 May 2007
    Posts:
    27,991
    Likes Received:
    782
    Last edited: 26 Nov 2015
Recent Posts

Loading...
Similar Threads - raising salt levels Forum Date
Raising brine shrimp General Discussions and Advice 3 Jul 2015
Raising live brine shrimp General Discussions and Advice 21 Oct 2014
Has anyone ever had success with raising a Juvenile Regal tang General Discussions and Advice 17 Feb 2014
Raising Ca and Kh whilst using Kalk Water Parameters and Additives 6 Jan 2014
raising salinity levels General Discussions and Advice 3 Nov 2013
Raising Skimmer - Help Please. General Discussions and Advice 14 Jun 2012
Calcium - Trouble Raising the Level General Discussions and Advice 13 Feb 2011