Seachem Laboratories Reef Builder

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Seachem Seachem Reef Builder ™ raises carbonate alkalinity without immediately impacting on pH. With long term use there will be a tendency to stabilize at pH 8.3. Carbonates and calcium are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health. Used as directed, Reef Builder™ will not deplete calcium, magnesium, or strontium which usually tend to precipitate with increasing alkalinity. Reef Builder™ and Reef Buffer™ may be used together. Use Reef Builder™ to raise carbonate alkalinity without affecting pH. Use Reef Buffer™ to raise carbonate alkalinity and pH.

Reef Chemistry Calculator

Use our chemistry calculator to find out how much you need to add to your aquarium.


Product Manuals & Documentation

Seachem Laboratories Reef Builder

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

Seachem
Seachem Laboratories, Inc. was established in 1980 by Dr. Leo G. Morin. Seachem moved into a state of the art 110,000 square foot facility in Madison, Georgia marking their 25th anniversary in the industry in 2005. This facility includes production and research laboratories, manufacturing, inventory, shipping, and office space.

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Overall, others give this:

  • 4.8

19 Reviewers (100%) would recommend this

Overall Rating:

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5
5.0
A staple for the reef

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REVIEW
Excellent product that allows you to aggressively raise alkalinity without dramatic effect on Ph
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5
5.0
Reef Builder

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REVIEW
I find Seachem products work well for my system. I have used them in the past, tried other methods, then I came back. I tried the basic two part with carbonate. That solution has a very high pH, which clouds the water, precipitates calcium and I get to clean pump impellers constantly. I don'...Read More
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5
5.0
reef builder

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Does what the label says it does. Sort of hard to dissolve.
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5
5.0
Best product for ALK there is!

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I've been using this product for over 10 years now, and I recommend it and use it on ALL of my maintenance customer tanks. Won't overshoot alkalinity if dosed properly, and won't effect the PH, or Calcium levels. Grows Beautiful Coralline Algae!
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4
4.0
Reef Builder

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This is a great product. The directions for dosing is right on the mark
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5
5.0
kh

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I love this product...it's really just one of those things that go unnoticed until something goes wrong which does not happen with this product!
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5
5.0
Good Stuff

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Used this for years. Mix a half cup with a liter of RODI water and make part B of 2 part. Do the same with Advantage Calcium for part A. Way cheapper than buying premade solutions. Also, Advantage Calcium doses magnesium to my tank too.
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Overall, others give this:

  • 4.8

19 Reviewers (100%) would recommend this

Overall Rating:

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