EIHO Aqua GH 500ml
Replenish GH for DI/RO or soft water
Replace natural minerals (calcium, magnesium, potassium)
Brings out natural colour and behavior for soft water fish.
AQUA GH is specially formulated to increase minerals in water that are needed by fishes. It restores the GH minerals (calcium, magnesium, potassium and sodium) which are often lacking in tap water and DI/RO water.
Why Are Minerals Important in Aquarium Environment?
Often water sources from tap and RO systems do not contain the necessary minerals needed by fishes to be in good health. In the natural environment, water is constantly mineralised by the acidification of river rocks. A closed environment such as an aquarium usually lacks calcium and magnesium.
| Mineral | Function |
|---|---|
| Calcium | Supports shell and bone development in fish |
| Magnesium | Helps maintain stable water chemistry and fish health |
| Potassium | Regulates nerve and muscle function |
| Sodium | Supports osmoregulation in aquatic life |
FAQ
Can I use AQUA GH with other water conditioners?
Yes, AQUA GH can be used alongside other water conditioners. However, ensure that the total mineral content does not exceed recommended levels for your aquarium setup.
How much AQUA GH should I add to my water?
Follow the dosage instructions on the packaging. Typically, 1 ml per 10 liters of water is recommended for soft water systems.
Is AQUA GH safe for all types of fish?
AQUA GH is safe for most soft water fish species. Always test water parameters before and after use to ensure compatibility with your specific fish type.

Carl Bell –
I’ve been using AQUA GH for my soft water tank for three months. My neon tetras have become more vibrant and active. The water clarity improved noticeably, and my fish seem healthier overall. Easy to mix and effective.
Tracey Poole –
Good product for restoring minerals in RO water. My guppies have stopped showing signs of stress. I added it once a week and noticed a difference in their color and activity.
Diane Morgan –
My aquarium used to have pale fish due to low mineral content. After adding AQUA GH regularly, the fish have developed richer colors. The water feels more balanced and stable.
Rebecca Harris –
It works, but I had to adjust the dosage. I used it once a week and saw some improvement, but the effect wasn’t as strong as expected for my small tank.