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GH Booster | 1lb


Product Description

Gh Booster is a 1:3:3 mixture of Magnesium Sulfate ( MgSO4), Potassium Sulfate ( K2so4) and Calcium Sulfate (CaSO4) essential for protein synthesis, root and lignin development and nutrient transport. Raises General Hardness (GH) in soft water and RO water sources.


  • Dosing: 1 tsp into 10 gallons will add 2dGH

*Amounts above are for reference only.  Your planted aquarium may need more or less depending on many factors.


Guaranteed Analysis

Soluble Potash(K2O)  22.3%

Calcium(Ca)  9.64%

Magnesium(Mg) 1.42%

Sulfur(S)  17.29%



-The gh booster may come as a solid brick, simply break it up and add to the tank, it will dissolve slowly but will not harm anything

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Product Reviews

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  1. Works as intended but came in clumped and hydrated 3 Star Review

    Posted by on Mar 11th 2019

    Product was exactly what I ordered and was a good price, however the salts came in as almost a solid unit and felt hydrated to the touch. I had to tap it a few times with a rubber mallet to break it up enough to scoop. This also means that it takes longer to actually dissolve.

    Despite all this it still works as intended.

  2. Great products! 5 Star Review

    Posted by on Jan 22nd 2019

    Great GH booster. Easy to use and inexpensive for great quality. I wont buy fertilizes form anyone else.

  3. Good product and service 5 Star Review

    Posted by on Jul 11th 2018

    Product did as it should, GH has been raised. When I emailed NilocG with a question they responded within minutes. Great!

  4. Great customer service 5 Star Review

    Posted by on Jun 19th 2017

    Bag came damaged with a hole from shipping. Got support from Facebook and a few days later I received a new bag to transfer the gh booster from the old bag. Fast and great service.

  5. Amazing results!!! 5 Star Review

    Posted by on Jun 9th 2017

    After ordering and using NilocG's GH booster I noticed that my plants are doing even better than before. I didn't think that my plants could do any better since I'm not using CO² but I was wrong! Using Thrive alone really opened my eyes to the fact that Seachem was selling me water and now with the addition of the GH I am getting unbelievable results. Nobody believes that I'm able to get the results that I get without CO² but like I tell everyone. Stop wasting your time and money and start using NilocG's products! You can't go wrong... Also a sufficient source of calcium for shrimp and snails.

  6. Great for the planted aquarium 5 Star Review

    Posted by on Apr 4th 2017

    This stuff works great. The stuff is hard to dissolve but that is the nature of the beast. if you have soft water this stuff is a must. Even if you do not have soft water you get benefit from it. These guys ship super fast and have the best deals. I only go through them for my plant needs.

  7. Great fertz, great prices 5 Star Review

    Posted by on Dec 29th 2015

    I've ordered dry fertz here a few times, shipping is always quick and well packaged.
    My plants look great.

  8. Good gh booster 5 Star Review

    Posted by on Dec 19th 2015

    Probably one of the best sites with a great price. As long as you know how yo use the product, you can't go wrong.

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