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Page 2 of 2 FirstFirst 12
Results 11 to 16 of 16
  1. #11

    Join Date
    May 2010
    Location
    Glen Arm. MD
    Posts
    2,634

    Awards Showcase

    Latest gifts & ribbons:

    Happy Christmas - MuckyFish   thanks for advising on vegetables for my kribs! so here is a discus - ScottishFish   You help a lot - PhillipOrigami   For the bank account, and thx for the rep - Cliff   beautiful discus! - Crispy   

    Smile


    0 Not allowed!
    The substrate can store toxic chemicals like a sponge - a single 90% water change will do far more than three 50% water changes (first: 10 ppm * 0.5 = 5 ppm; next one: 5 ppm * 0.5 = 2.5 ppm; third one: 2.5 ppm * 0.5 = 1.25 ppm. Now a single 90% is: (10 ppm - 10* 0.9) = 1 ppm. So a 90% W/C gives 1 ppm but THREE 50% W/C give 1.25 ppm!!!!

    Note the math. It is tricky for values that aren't 0.5. For example: a 75% W/C is NOT 10 ppm * 0.75 = 7.5 ppm!!! Not correct. It is really 10 ppm - (10 *0.75) = 2.5 ppm left. The 0.5 is a special case that works by simple multi. In a similar fashion, a 25% W/C is 10 ppm - (10 *0.25) = 7.5 ppm left in the tank. Try this method for 0.5 and it still works.
    Knowledge is fun(damental)

    A 75 gal with eight Discus, fake plants, and a lot of wood also with sand substrate. Clean up crew is down to just two Sterba's Corys. Filters: continuous new water flow; canister w/UV, in-tank algae scrubber!! Finally, junked the nitrate removal unit from hell.

    For Fishless cycling:http://www.aquaticcommunity.com/aqua...ead.php?t=5640

  2. #12

    Join Date
    Sep 2010
    Location
    Lasalle-Peru
    Posts
    6,133

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    Latest gifts & ribbons:

    No wonder your m doesn't work! Here is some more to replace what you sloshed. - mommy1   Bunny pest control penquin. - mommy1   I severely underestimated her stupidity... which was stupid of me! - Honey Badger 1   Well, from where I am sittin' it is good to have you back man! Have one on me. - Honey Badger 1   Thanks for the rep :-) - ~firefly~   
    Bone Marrow Donation - Childhood Depression - Depression - Environment - Eye Injury Prevention - Glaucoma - Kidney Cancer - Kidney Disease - Kidney Transplantation - Leukemia - Lyme Disease - Mental Retardation - Missing Children - Organ Donation - T - 850R   

    Default


    0 Not allowed!
    Massive +1 to the previous two posts.
    Gas mileage isn't everything OIIIIIIIO
    Lack of planning on your part does not constitute an emergency on my part.
    Why pretend there are no stupid questions? Actually, There are many stupid questions: "Should I drink this bleach?" Is just one example.
    Having said that, Just because it's a stupid question doesn't mean that it shouldn't be asked. It's better to know.

    A warm beer is better than a cold beer. Because nothing is better than a cold beer, and a warm beer is better than nothing.

  3. #13

    Join Date
    Jun 2012
    Posts
    3,775

    Awards Showcase

    Latest gifts & ribbons:

    Great info on water softeners - Boundava   Thanks for the gift! I bow to your experience so i wanted to be sure that i did not give the OP wrong info. - Silbar   Tx for all the help for me and everyone else! - angelcraze2   Rocksor knows cichlids! - Brhino   Can''t give rep points, but great job on the diagnosis/treatment - Boundava   

    Default


    0 Not allowed!
    what everyone else said

  4. #14

    Join Date
    Oct 2012
    Location
    Northern KY
    Posts
    1,249

    Awards Showcase

    Latest gifts & ribbons:

    No Message - Cory Catfish   ٩(̾●̮̮̃̾̃̾)۶ - korith   you need some more fish :) - Vip3r   have a ram... - Vip3r   and a salvini - Vip3r   

    Default


    0 Not allowed!
    Quote Originally Posted by Cermet
    The substrate can store toxic chemicals like a sponge - a single 90% water change will do far more than three 50% water changes (first: 10 ppm * 0.5 = 5 ppm; next one: 5 ppm * 0.5 = 2.5 ppm; third one: 2.5 ppm * 0.5 = 1.25 ppm. Now a single 90% is: (10 ppm - 10* 0.9) = 1 ppm. So a 90% W/C gives 1 ppm but THREE 50% W/C give 1.25 ppm!!!!

    Note the math. It is tricky for values that aren't 0.5. For example: a 75% W/C is NOT 10 ppm * 0.75 = 7.5 ppm!!! Not correct. It is really 10 ppm - (10 *0.75) = 2.5 ppm left. The 0.5 is a special case that works by simple multi. In a similar fashion, a 25% W/C is 10 ppm - (10 *0.25) = 7.5 ppm left in the tank. Try this method for 0.5 and it still works.
    Oh believe me, if my readings are that bad i automatically vaccum my gravel. the other problem is a full 2.5 bucket in my case is all i can safely carry without chance of dropping it. So i had to do two to three water changes in the same day one after the other to ensure i covered everything.

    20 gal tall - Helios - HM Betta Male (obtained around 03/2016), 1 zebra nerite, 8-10 cherry shrimp, 1-2 amano shrimp, Java Moss and crypto planted tank w/ Driftwood and Spider Wood

    l

  5. #15

    Join Date
    Nov 2012
    Location
    Loveland, Ohio
    Posts
    140

    Latest gifts & ribbons:

    ٩(̾●̮̮̃̾̃̾)۶ - korith   No Message - Jaster   Welcome to the forum - fishmommie   

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    0 Not allowed!
    I vacuumed all my gravel during the first and second 50% changes.

    Aha! There lies the problem Cermit! three 50% changes didn't change the reading at all. That was three 50% WCs within three days.
    Last edited by Dave Waits; 11-17-2012 at 04:09 AM.

  6. #16

    Join Date
    Nov 2012
    Location
    Loveland, Ohio
    Posts
    140

    Latest gifts & ribbons:

    ٩(̾●̮̮̃̾̃̾)۶ - korith   No Message - Jaster   Welcome to the forum - fishmommie   

    Default


    0 Not allowed!
    Quote Originally Posted by korith
    As an experiment, take a store bought water bottle and test the water in it. If it gives a weird result there is a good chance your test kit may be messed up or expired.

    Here is how to check the bottle to see if it is expired.

    Each reagent bottle has a Lot # printed
    on the bottle. The last four digits are the month and year of
    manufacture. Example: Lot # 28A0102. This is a pH reagent manufactured
    in January of 2002. Pond Care Wide Range pH, ammonia, High Range pH,
    Nitrate, phosphate, Copper, calcium and GH all last for three years.
    nitrite and KH will last for four years. Freshwater pH(low range) and
    Pond Care Salt Level will last for five years. I would not trust these
    kits after they have expired.

    Info was found on
    http://www.fishlore.com/fishforum/te...kit-users.html
    Lot number on my Nitrite bottle says;Lot 26AO712 EXP.07/2017 so, it was made in July of this year.

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