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BRS Bulk Kalkwasser (Calcium Hydroxide) Aquarium Supplement

BRS Bulk Kalkwasser (Calcium Hydroxide)
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BRS Bulk Kalkwasser (Calcium Hydroxide) Aquarium Supplement


Choose a size

1/2 Gallon
SKU: 000242
Earn 8 Reward Points
1 Gallon
SKU: 000241
Earn 12 Reward Points
5 Gallon
SKU: 000245
Earn 54 Reward Points
  • Great for stabilizing PH By Saltydog on 3/27/2015

    I run a 2 part dosing for calcium addition, but I was having issues with PH in the winter due to house being closed up. Added this to my ATO and all my issue disappeared.
    Great products and videos.
    Thanks BRS
  • 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


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