Best GH Aquarium Water Treatments of 2025

Chloe Foster Avatar
Chloe Foster
Last Updated: 5 Feb 2025

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GH Aquarium Water Treatments are a range of products designed to improve the quality of water in aquariums. The products are formulated to remove harmful chemicals, such as chlorine and heavy metals, that can be harmful to fish and other aquatic life. They also contain beneficial bacteria that help to stabilise the water chemistry and maintain a healthy environment for the fish. The products are easy to use and are available in a variety of formulations to suit different aquarium types and sizes. With GH Aquarium Water Treatments, you can be confident that your fish will thrive in a clean and healthy environment.

At a Glance: Our Top Picks

Envii Aquarium Equaliser for pH Control Cover #TOP 1
Envii Aquarium Equaliser for pH Control
ftb score rating icon 9.8
CIANO Aquarium Water Treatment 100ml Cover #TOP 2
CIANO Aquarium Water Treatment 100ml
ftb score rating icon 9.7
Amtra GH + Mineral Salts for Freshwater Aquariums Cover #TOP 3
Amtra GH + Mineral Salts for Freshwater Aquariums
ftb score rating icon 9.5

Top 9 GH Aquarium Water Treatments

#TOP 1

Envii Aquarium Equaliser for pH Control

50 g (Pack of 1)
Envii Aquarium Equaliser for pH Control Cover
Envii Aquarium Equaliser – Aquarium pH Balance & Controller, Reduces pH & Buffers KH & GH in Fish Tanks, Ammonia Remover Treats 500 Litres of Water

The Envii Aquarium Equaliser is designed to stabilise pH levels in your aquarium, ensuring they remain between 7.5 and 8.5. This product is safe for all fish and aquatic life due to its natural ingredients, giving you peace of mind. It effectively removes ammonia and toxic metals, creating a healthier environment for your fish. Additionally, it fosters beneficial bacteria, which helps improve water clarity and reduces algae growth, making it easier for you to maintain your aquarium's health.

What We Like
Stabilises pH levels effectively
Safe for all aquatic life
Removes ammonia and toxins
Promotes beneficial bacteria growth
#TOP 2

CIANO Aquarium Water Treatment 100ml

405405-1
CIANO Aquarium Water Treatment 100ml Cover
CIANO Aquarium Water Treatment GH 100ml

The CIANO Water Treatment is essential for maintaining the health of your aquarium. It is designed for use with both freshwater and tropical aquariums, ensuring a safe environment for your fish. This water treatment is easy to use and offers a cost-effective solution for your aquarium needs. Additionally, it acts quickly, making it perfect for aquariums up to 400 litres, so you can swiftly improve water quality whenever necessary.

What We Like
Essential for aquarium health
Cost-effective and easy to use
Fast-acting formula
Suitable for large aquariums
#TOP 3

Amtra GH + Mineral Salts for Freshwater Aquariums

A3050635
Amtra GH + Mineral Salts for Freshwater Aquariums Cover
Amtra - GH + Mineral salts supplement for fresh water aquarium, 300 ml

Amtra GH + Mineral Salts is a 300 ml supplement designed for freshwater aquariums. This balanced mixture of salts and trace elements effectively increases the total water hardness (dGH), thus creating a healthier environment for your fish. By maintaining the right water parameters, you ensure robust growth for aquatic plants. For convenience, you can easily dose the product directly into your osmosis water or aquarium. Just remember to adjust the GH gradually, avoiding increases of more than 2° per day.

What We Like
Boosts water hardness effectively
Promotes healthy fish and plants
Easy to use and dose
Convenient 300 ml packaging
#TOP 4

SEACHEM Shrimp GH Aquarium Water Treatment 150ml

7071
multicoloured
SEACHEM Shrimp GH Aquarium Water Treatment 150ml Cover
Aquarium Water Treatments Shrimp GH 150 ml

The SEACHEM Shrimp GH is an aquarium water treatment designed specifically for shrimp enthusiasts. This 150ml formula helps maintain the optimal water conditions essential for the health and well-being of your shrimp. By using high-quality materials, it ensures that you are providing the best possible environment for your aquatic pets. This product is not only effective but also easy to use, making it a convenient choice for anyone looking to enhance their aquarium's water quality.

What We Like
High-quality materials used
Easy to use
Optimises water conditions
Convenient for shrimp care
#TOP 5

Silbermann GH Plus Water Hardener for Aquariums

Silbermann
SIS386
White
1000 ml
Silbermann GH Plus Water Hardener for Aquariums Cover
Silbermann GH Plus Water Hardener DGH Hardening Salt Increase Total Hardness in Aquarium or Garden Pond (1000 ml)

The Silbermann GH Plus is designed to enhance the total hardness of your aquarium or garden pond water. It contains a balanced mix of all essential elements, both macro and micro, which mimic natural conditions, ensuring a healthy environment for aquatic life. This synthetic sea salt is specifically formulated for reef and saltwater aquariums, providing optimal conditions for your marine ecosystem. Additionally, it is free from nitrates, silicates, and phosphates, helping to maintain clear and safe water for your fish and plants.

What We Like
Increases total hardness effectively
Natural element balance
Perfect for reef aquariums
Nitrate and phosphate free
#TOP 6

SaltyShrimp Bee Shrimp Mineral GH+ Treatment

SSM-NBSM-850
SaltyShrimp Bee Shrimp Mineral GH+ Treatment Cover
SaltyShrimp Bee shrimp mineral GH+

SaltyShrimp GH+ Treatment is a mineral salt designed specifically for bee shrimps and other soft water creatures. It effectively raises the total hardness of your aquarium water, making it suitable for these delicate animals. This product is particularly useful for hardening osmosis water, ensuring a safe and healthy environment for your aquatic pets. By using this treatment, you can easily optimise the water conditions, promoting better growth and vitality in your shrimps.

What We Like
Specifically for bee shrimps
Raises total hardness effectively
Ideal for osmosis water
Easy to use in aquariums
#TOP 7

Seachem Equilibrium Water Conditioner, 300 g

116044608
white
300 grams
Seachem Equilibrium Water Conditioner, 300 g Cover
Seachem Equilibrium Aquarium Water Conditioner, 300 g,white

Seachem Equilibrium is designed to restore and maintain mineral balance in your aquarium, ensuring a stable general hardness (GH) level. This is essential for the health of your aquatic life. Unlike competing products, it does not contain sodium or chloride, making it a safer choice for your fish. It is particularly beneficial when used with reverse osmosis (RO) or deionised (DI) water, allowing you to create an optimal environment for your aquatic pets. This product simplifies your aquarium maintenance, ensuring your water quality remains high.

What We Like
Restores mineral balance effectively
No sodium or chloride
Ideal for RO or DI water
Easy to use
#TOP 8

Aqua Balance GH/Kh Buffer Up for Fish Health

does not apply
Aqua Balance GH/Kh Buffer Up for Fish Health Cover
Aqua Balance GH/Kh Buffer Up - Maintain Water Stability and Fish Health (1kg)

Aqua Balance Buffer Up is designed to help you maintain optimal water conditions in your aquarium. By regulating GH, it increases essential minerals like calcium and magnesium, promoting fish vitality. The product also enhances KH levels, which prevents pH crashes, ensuring a stable environment for your aquatic life. Moreover, it provides a steady source of KH, aiding filter bacteria and improving filtration efficiency. With this buffer, you can create a healthier habitat for your fish.

What We Like
Regulates essential minerals
Prevents pH crashes
Enhances filtration efficiency
Supports fish vitality
Maintains water stability
#TOP 9

Continuum Aquatics Flora Viv Reverse Osmosis Supplement

QRRO250
250-g
Continuum Aquatics Flora Viv Reverse Osmosis Supplement Cover
Continuum Aquatics Flora Viv Reconstitute RO – Reverse Osmosis Mineral Ion Supplement for Freshwater and Planted Aquariums 250-g

The Flora Viv RO Supplement from Continuum Aquatics is designed to enhance your freshwater and planted aquariums. It contains a multi-component mixture of mineral ions, which helps to maintain General Hardness (GH) and alkalinity (KH), essential for the health of your aquatic life. This supplement effectively converts filtered water from reverse osmosis, distillation, or deionization into a natural habitat for your fish, invertebrates, and plants. By using this product, you can successfully raise delicate species like discus and create optimal conditions in both home and public aquariums.

What We Like
Enhances water quality
Supports fish and plant health
Easy to use
Suitable for various aquariums
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is the proper GH for a freshwater aquarium?

Ideally, freshwater aquariums have a GH between 4-8 dGH (or 70-140 ppm). All animals need some minerals, but certain fish like livebearers, goldfish, and African cichlids prefer higher GH levels. If you're trying to breed discus or other soft water fish, you may need to reduce the GH to 3 dGH (or 50 ppm) or below.

Editor's Notes

During our gh aquarium water treatment research, we found 57 gh aquarium water treatment products and shortlisted 9 quality products. We collected and analyzed 13,548 customer reviews through our big data system to write the gh aquarium water treatments list. We found that most customers choose gh aquarium water treatments with an average price of £10.67.

The gh aquarium water treatments are available for purchase. We have researched hundreds of brands and picked the top brands of gh aquarium water treatments, including envii, Ciano, Amtra, Seachem, Silbermann. The seller of top 1 product has received honest feedback from 1,189 consumers with an average rating of 4.9.

Written by
Chloe Foster Avatar

Happy Pet Happy Owner by Chloe Foster sold over 100 thousand copies in the UK. Chloe worked as a veterinarian in The Veterinary Medicines Directorate, Woodham. She stayed for seven years before coming home to set up her pet store in Swansea. Chloe is an experienced veterinarian with a flair for literature. Chloe is vast in the knowledge of animals, animal nutrition, medication, and care.