SKU: 723840804

Sera GH-Test-15ml[Volume - 15ml]

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Description

Sera GH-Test-15ml[Volume - 15ml]sera gH Test FRESH WATER, PONDWATER TESTINGCARE It simplifies the process of tracking total hardness levels for around 420dGH. If the GH values are too low, we suggest using sera mineral salt. To decrease high total hardness, mix in R O water. For producing softer water, consider adding sera blackwater aquatan or filtering through sera super peat. Directions for use: Shake the reagent bottle thoroughly before use! Avoid letting the water being tested

sera gH-Test FRESH WATER, PONDWATER TESTINGCARE

It simplifies the process of tracking total hardness levels for around 420°dGH. If the GH values are too low, we suggest using sera mineral salt. To decrease high total hardness, mix in R/O water. For producing softer water, consider adding sera blackwater aquatan or filtering through sera super peat.

Directions for use:

  • Shake the reagent bottle thoroughly before use! Avoid letting the water being tested come in contact with aquarium or pond water!
  • 1. Rinse the measurement vial with the water to be tested multiple times, then fill it to the 5 ml mark. Wipe the outside of the vial to dry.
  • 2. Add the reagent drop by drop. Gently shake the vial after each drop, until the color transitions from red to brown and finally to green.
  • 3. The quantity of drops used represents the total hardness (in °dGH). For example, 5 drops equal 5°dGH.
  • 4. Cleaning: Rinse the vial thoroughly with tap water before and after each test. Immediately close the reagent bottle after use. Store it at room temperature and away from light. Keep it locked up and out of children's reach. For testing ornamental fish aquariums and pond water only.

US Information for use

Most ornamental fish come from regions where the soil is low in minerals. However, in many other parts of the world, the opposite is true. Rainwater leaches calcium and magnesium from the soil, resulting in hard water. With the sera gH-Test, you can swiftly assess the precise total hardness. Understanding natural conditions aids in selecting the ideal fish species for a community aquarium and is essential for successful breeding. To reduce high total hardness levels, mix in R/O water. Using a combination of sera aquatan and sera blackwater aquatan or filtering through sera super peat will help achieve soft water, which is necessary for many South American fish (such as those from the Amazon basin).

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SKU: 723840804

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Cat R
Boise, US
★★★★★ 5
Great value moisturizer for sensitive skin
As someone with rosacea and easily irritated, sensitive skin, I’m always nervous trying new skincare. If you’re in the same boat, this is absolutely the moisturizer to look into. This formula is incredibly light but still genuinely hydrating. It doesn’t feel heavy, greasy, or suffocating. It absorbs beautifully and leaves my skin calm and comfortable instead of red or burning. It gives the prettiest soft, dewy glow without looking shiny. One of my favorite things? It layers perfectly under makeup. My foundation doesn’t slide around or separate - it stays put while still looking fresh and radiant. It’s that ideal balance of hydrated but not slick. I also love that it comes in a tube instead of a jar. No dipping fingers into a tub (huge plus for sensitive, reactive skin). And you truly only need a small amount - a little goes a long way
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Reviewed in the United States on February 27, 2026
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saravr
Bozeman, US
★★★★★ 5
Good daily moisturizer
This is the second time I’m purchasing this moisturizer and I’m still very impressed. It’s a bit thick when first applying but soaks in quickly and has helped with my skin feeling tight or itchy. I use it as a daily product after washing my face and find it holds up throughout the day. The tube is smaller but for the price, this isn’t too big of an issue for me, especially compared to other products I’ve used in the past.
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Reviewed in the United States on May 29, 2026
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sandra banuelos
Dallas, US
★★★★★ 5
It really hydrates
I havent used it long enough but so far so good. I haven't had any reactions to it. It is really oily so I personally do not use it during the day becaus ei dont like looking extra oily. But at night is really good.
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Reviewed in the United States on April 27, 2026
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Aniya A.
Los Angeles, US
★★★★★ 4
Good, but not for super oily skin
My skin is oily in my t zone especially my nose area due to my large pores. I wanted to find a ceramide cream to help protect my skin barrier when using retinoid at night. This product is heavy and had me waking up with a greasy and oily t zone in the morning. I think it would be great for dry dehydrated skin but not for me. It does make my skin feel soft though. I haven't experienced any breakouts due to it either. The bottle is small but a little definitely goes a long way with this as it is rich like the name describes. I also love how it doesn't have a fragrance at all. Everything about this product is pretty good, its just not suited for my skin personally due to my skin being naturally oily already.
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Reviewed in the United States on May 3, 2026
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Marlyn
Dallas, US
★★★★★ 5
It’s good and non irritating
Perfect for daily use, it’s lightweight so if you have very dry skin (like me) u may need to use thicker moisturizer but it’s still pretty good. U can still wear make up afterwards with no issues which I loved
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Reviewed in the United States on May 26, 2026

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