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BRS Bulk Kalkwasser (Calcium Hydroxide) Aquarium Supplement

BRS Bulk Kalkwasser (Calcium Hydroxide)
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Quick Overview

Dosing with BRS Bulk Kalkwasser is one of the very few proven, effective methods to add calcium and alkalinity with a single product while maintaining pH at an affordable price. Commonly used in conjunction with auto top off systems. BRS Bulk Kalkwasser is produced with the highest quality material available to the aquarium industry.


USING KALKWASSER


  1. Before dosing Kalkwasser, it is necessary to test and raise calcium and alkalinity levels to their correct levels. We suggest using Calcium Chloride and Sodium Bicarbonate. Kalkwasser should not be used for this because, in large doses, it will significantly raise pH.

  2. Use the BRS Reef Calculator to determine proper bicarbonate and calcium chloride amounts to adjust alkalinity and calcium.

  3. Maintain new levels with Kalkwasser using an Auto Top Off System.

See Full Details for more information on Kalkwasser, Calcium Chloride, Sodium Bicarbonate and Magnesium Mix and their effects on your tank.


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  • Quick Overview

Dosing with BRS Bulk Kalkwasser is one of the very few proven, effective methods to add calcium and alkalinity with a single product while maintaining pH at an affordable price. Commonly used in conjunction with auto top off systems. BRS Bulk Kalkwasser is produced with the highest quality material available to the aquarium industry.

USING KALKWASSER

  1. Before dosing Kalkwasser, it is necessary to test and raise calcium and alkalinity levels to their correct levels. We suggest using Calcium Chloride and Sodium Bicarbonate. Kalkwasser should not be used for this because, in large doses, it will significantly raise pH.
  2. Use the BRS Reef Calculator to determine proper bicarbonate and calcium chloride amounts to adjust alkalinity and calcium.
  3. Maintain new levels with Kalkwasser using an Auto Top Off System.

See Full Details for more information on Kalkwasser, Calcium Chloride, Sodium Bicarbonate and Magnesium Mix and their effects on your tank.More

BRS Bulk Kalkwasser (Calcium Hydroxide) Aquarium Supplement

99% Recommend this to a friend (92 of 93)

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Previously Asked Questions

  • by Rick Linboom on November 4, 2013, @1:36 PM

    I don't have a,auto top off, how would I dose then?

    Bulk Reef Supply Hi Rick,
    If you don't have an auto top off (which I would highly recommend) then your going to need a kalk dripper of some sort. Check out this video we made on making your own kalk dripper.

    http://www.youtube.com/watch?v=LhcuEQpLIfc

    Do you find this question helpful?  Yes   No

  • by Adam on November 16, 2013, @10:23 AM

    Hey there,

    I've added kalkwasser to my ATO with the ratio of 1 teaspoon per gallon of ATO volume. It doesn't seem to dissolve, just settle out after a couple hours. I don't run a circulation pump in my ATO as it's only 7 gallons and I'm filling it every week. Would a circulation pump help dissolve the kalk? Would you recommend the circulation pump only coming on with the top off pump? I've read you shouldn't circulate kalk when it's in an ATO, is this true?

    Thanks!

    Bulk Reef Supply Hey Adam,
    You specifically do not want to circulate kalk as you will actually deplete it by doing so (your continuously adding co2 which will deplete it). Its normal to have some sediment when you mix kalk and nothing to worry about. Give it a good mix when you put it in and then just allow it to settle and use it.

    Do you find this question helpful?  Yes   No

  • by chen yang on November 27, 2013, @9:16 AM

    how do i know how much to put in my ATO reservior? is there a calculator like the ones for calcium and alkalinity on BRS?

    Bulk Reef Supply Kalk can't be added to raise your calcium and alkalinity like you would with two part because the pH swing would be so significant (hence no calculator option). When it comes to kalk you can add up to 2 teaspoons per gallon of top off water but I would start with 1/2 teaspoon. If that isn't enough to keep up with your consumption then you can go ahead and kick it up a notch until you find that sweet spot.

    Do you find this question helpful?  Yes   No

  • by David on April 29, 2014, @10:56 PM

    In reading some questions asked and answered, I came across one about using a circulation pump to dissolve the Kalk. The answer was not to, but could you at least use it initially to dissolve the kalk? Just when you add it in the beginning to mix it up. If not, then how would you mix it in a 20 gallon brute trash can?

    Bulk Reef Supply Hey David,
    If you really wanted to you could run it for like a minute, but just pouring the kalk in and mixing it for a minute or two by hand generally suffices as well. The thing you don't want to do is continue to agitate it after the initial mixing. If for example you put the power-head in for as little as a half hour you may remove a significant amount of the kalks usefulness.

    Do you find this question helpful?  Yes   No

  • by Tim on June 15, 2014, @5:29 PM

    Hi,
    My Question is if you can't put a power-head in to mix the solution because you might remove a significant amount of the kalks usefulness, then what happens when you drip the solution into your tank? With so much circulation/water movement, wouldn't that just deplete it within a few minutes?

    Thank you.

    Bulk Reef Supply Hi Tim,
    The water chemistry in a container of a kalkwasser solution is extremely different from the water chemistry of an aquarium. In the aquarium the concentration is much lower and precipitation far less of an issue (though if you add to much kalkwasser to the aquarium and increase the concentrations too high it will precipitate just as it would in the storage container). Used correctly though that will not be a problem.

    Do you find this question helpful?  Yes   No

  • by Joseph on May 5, 2014, @11:06 AM

    Does kalkwasser actually raise levels? Or just maintain your levels? I'm being told both.

    Bulk Reef Supply Hi Joseph,
    Technically you have to raise the levels to maintain the levels (maintaining really just means your increasing the levels at the same rate its being consumed). The confusion comes from the fact that kalk would be a poor choice to try and raise the levels by more then that because of its significant pH effect. If you added enough kalk to say raise your tanks calcium from 400 to 450, you would also raise the pH to catastrophic levels. It also suppliments both calcium and alkalinity, so you can't raise one without messing with the other. Two part would be what you want for adjusting levels.

    Do you find this question helpful?  Yes   No

  • by Scott on August 1, 2014, @2:26 PM

    Do you ship Kalkwasser into Canada?

    Bulk Reef Supply Hi Scott,
    Things with customs can change rapidly, but at this time we don't have any issues sending Kalkwasser to Canada.

    Do you find this question helpful?  Yes   No

Full Details

Kalkwasser - This will be used for daily dosing to maintain calcium and alkalinity levels as well as elevate the tanks pH.  Because this product does elevate the pH, it is important to dose slowly in small amounts.  This product is designed to be used daily to continually replace calcium and alkalinity as it is consumed and not to make large adjustments.

 

Calcium Chloride - This is used to make larger adjustments to calcium levels. This product has no effect on the tank's pH so it is possible to make larger changes to calcium levels in single doses.

 

Sodium Bicarbonate - This is used to make larger adjustments to the tank's alkalinity levels. Sodium bicarbonate does have a small temporary lowering effect on the tank's pH. It is possible to make relatively large adjustments to the tank's alkalinity without a major impact on the tank's pH but it is wise to monitor the tank's pH while dosing.

 

Magnesium Mix - Dosed occasionally to maintain magnesium levels. Maintaining correct magnesium levels helps prevent calcium and alkalinity from precipitating and makes maintaining correct parameters much easier.

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Reviews

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  • Great Product real Pure By idol on 2/11/2015

    I love this Kalk. It is really simple to apply its use and keep your reef stable with minimal time just using it in top off water. Great.
  • Easy By Mike on 2/6/2015

    I use this product through a kalk reactor using the 50ml/min BRS 50ml peristaltic dosing pump. It is by far the easiest and most reliable way to maintain alkalinity and calcium levels in low to medium demand systems.
  • Kalk is great stuff! By Brian on 2/5/2015

    BRS Kalk is reasonably priced and make a BIG difference added to ATO. I purchased a couple gallons. Plan to keep a regular supply and even look to save a few $$ when BRS offers a sale or coupon.
  • Great product, great price By Matt on 2/2/2015

    Works well, dissolves easily, and inexpensive for the value.
  • Good Stuff By Jeff on 1/26/2015

    Quality product, great price. Easy to use when mixing in with your ATO. Have heard some people say Kalk eats the aqualifter pump, but I've used mine for years with Kalk without any issues at all.
  • Thanks BRS By Thomas on 12/30/2014

    Another great product and a great price.
  • Kalk powder 22.5# "5 gallon" pail--good deal By Michael on 11/27/2014

    The stuff somehow even smells cleaner, somehow, than Mrs Wages.
    On sale, this was one of the least expensive sources I found.
    I went with my BRS pals because they have been consistent supporters of Michiganrwefers.com.
    Glad I did.

    ...be careful if you are "upgrading" or are replacing old product--your pH may elevate more quickly than you expect. Glad I did...
  • I Love Kalkwasser By June2881 on 10/16/2014

    I am dosing 2 tablespoons of kalkwasser mixed with 1/3 cup of vinegar and 2 gallons of RODI water into my 200 gallon sps tank and I couldn't be happier. I'm running zeovit which requires natural levels of elemtents and using kalkwasser to maintain 400 ca and 7.5 alk couldn't be any easier. I highly recommend dosing kalkwasser to anyone with low ph and lots of corals.
  • Jj By Jj on 5/18/2014

    Good,
  • Great, useful for all types of applications By Trevor on 4/21/2014

    I use this kalk for killing aiptasia and dosing top-off water.

    Works great, everyone should have a jar of this.
  • GREAT PRODUCT GREAT PRICE By rob on 4/1/2014

    I have used this product for years and have had great reults!
  • Fantastic Value By Andrew on 3/28/2014

    Works awesome in my ATO unit!!! I use 1/2 teaspoon per gallon and when the ATO kicks on it raises my PH from 7.8 to 7.9 after the water circulates. I will gradually increase the dosage to 1 teaspoon per gallon in about 2 months. I use Reef Crystal Pro for my salt and change about 10% of my water per week. I say about because I break the water changes up into 2-3 small water changes of 3-4 gallons at a time. My Red & Green Goniopora are like grumpy old men and don't like any changes.

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