SKU: 302160087

Sera Magnesium-Test (Mg)-Reagent 3 Refill Pack-3x15ml [Volume - 45ml]

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Description

Sera Magnesium-Test (Mg)-Reagent 3 Refill Pack-3x15ml [Volume - 45ml]This product is designed to measure the concentration of magnesium in a marine aquarium and includes a spare cartridge for reagent 3. Warning! Reagent 1 contains sodium hydroxide, which can cause serious burns. Keep this reagent securely stored and out of reach of children. Always wear protective gloves when handling. If the substance comes into contact with your eyes, rinse immediately with water and seek medical attention. If you experience nausea,

This product is designed to measure the concentration of magnesium in a marine aquarium and includes a spare cartridge for reagent 3.

Warning! Reagent 1 contains sodium hydroxide, which can cause serious burns. Keep this reagent securely stored and out of reach of children. Always wear protective gloves when handling. If the substance comes into contact with your eyes, rinse immediately with water and seek medical attention. If you experience nausea, consult a doctor and bring this manual with you.

A proper magnesium concentration is essential for the health of marine invertebrates and algae. A prime example is the red calcareous algae, which require substantial amounts of magnesium to form their skeletons. Natural seawater typically has around 1300 mg/l of magnesium. To create optimal conditions in your marine aquarium, it's crucial to maintain this concentration. The Sera magnesium test allows you to quickly and easily assess the magnesium level in your aquarium. You can also effectively boost magnesium levels using Sera magnesium plus.

Additionally, magnesium levels can be raised with Sera marin COMPONENT 6 magnesium. The amount of reagent needed will depend on the calcium levels in the water you are testing.

Store in a cool, dark place!

Instructions for Use:

In a marine water aquarium, maintaining an optimal magnesium level is vital for the thriving of invertebrates and decorative algae. Red calcareous algae are a great example, as they require high magnesium levels for their skeletal structure. Natural marine water contains around 1,300 mg/l, which should also be replicated in your aquarium for ideal conditions. The Sera magnesium-Test enables you to monitor your aquarium’s magnesium levels swiftly and efficiently. If you have prior testing experience with the Sera calcium-Test, this will be even easier for you. You can easily enhance the magnesium level in your marine water aquarium by using Sera marin COMPONENT 6 magnesium.

Directions for use: Shake the reagent bottles well before use! Avoid letting the tested water come into contact with aquarium or pond water!

  1. Rinse the measurement vial several times with the water you wish to test, then empty it. Dry the outside of the vial.
  2. Rinse the syringe multiple times with the water to be tested, then use it to fill the vial with 2 ml of this water.
  3. Add 6 drops of reagent 1 and shake the vial until the liquid is evenly mixed. Any cloudiness that appears will not affect the test.
  4. Add one level measuring spoon (provided in the kit) of reagent 2 to the vial and gently swirl (do not shake) until the powder has dissolved.
  5. Gradually add reagent 3 drop by drop while counting them. After every 5 drops, release pressure on the bottle to allow air to enter. Shake the vial after each drop until the color shifts from pink to blue (not violet) and remains stable for at least 30 seconds while you gently whirl the vial occasionally. Note the number of drops used.
  6. Empty and thoroughly rinse the measurement vial with tap water, then rinse it several times with the water to be tested and empty it again. Dry the outside of the vial.
  7. Use the syringe to take up 2 ml of the water to be tested and fill the vial.
  8. Add 6 drops of reagent 4 and shake the vial until the liquid is evenly mixed. Any cloudiness that appears will not affect the test.
  9. Add one level measuring spoon (included in the kit) of reagent 5 to the vial and gently swirl (do not shake) until the powder has dissolved.
  10. Add reagent 3 drop by drop while counting the drops, releasing pressure on the bottle after every 5 drops to allow air to be drawn in. Shake the vial after each drop until the color changes from red to green and remains stable for at least 30 seconds while whirling the vial occasionally. Note – you will require significantly more drops for this measurement compared to the first measurement!
  11. To find the magnesium level, subtract the number of drops used for the first measurement from the number of drops used for the second measurement. Multiply the remaining number of drops by 60 to calculate the magnesium level in mg/l. For example, if the first measurement used 4 drops and the second used 24 drops, subtracting gives you 20 drops. Multiplying 20 drops by 60 results in a magnesium level of 1,200 mg/l.
  12. Cleaning: Thoroughly clean the vial and syringe with tap water before and after each test. Close the reagent bottles immediately after use and do not switch caps. Store at room temperature and away from light. This product is intended for testing ornamental fish aquariums and pond water only.

Store in a cool, dark place!

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SKU: 302160087

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R. P. Dedic
Louisville, US
★★★★★ 5
Understand your loss. Celebrate your gain. Live!
Format: Kindle
A quick look at what makes us human; our principal line of relationship to the Cosmos. Maybe not always reverent, but always livable and believable. This is a book, a primer, on how to deal with the mess of life. Written with enough seriousness and tongue-in-cheek humor to be readable and thought provoking.
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Reviewed in the United States on May 22, 2025
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Isaac Butterworth
Grantham, US
★★★★★ 5
An Invitation into the Heart of Reality
Format: Kindle
I love reading Anne Lamott. She helps me feel that it’s okay to be human. She helps me see that prayer is human. It’s the most natural thing you can do. And, really, everybody does it, whether they know it or not. In this delightful book, Ms. Lamott reflects on what she calls three essential prayers: help, thanks, and wow! Such human expressions! She invites us, the readers, into her perspective on life, infused as it is with both the mundane and the mysterious. There are times when it is even threatening. But we are not alone. We have each other, and we have God. (Or, better, God has us.). I don’t know that Ms. Lamott would want to be called an optimist, but she certainly sees the good in the bad (or, maybe after the bad). Life is both, she seems to say, but all is okay. So we ask for help when we’re wise enough (or desperate enough) to do so—both for ourselves and others. And we say thanks because life is full of reasons to be grateful. And there is so much beauty around us—and tragedy too—that we cannot help but erupt with wow! I urge you to read this book. Perhaps, as you read it, you will feel as I did reading it, that you are in a conversation with someone very wise and very compassionate and very real.
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Reviewed in the United States on January 8, 2025
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Thyme
Chelsea, US
★★★★★ 5
Another Thanks and Wow by Anne Lamott!
Format: Hardcover
I was first introduced to Anne Lamott's writing about 25 years ago when I read her book, Bird by Bird. It was a book about how to write and from that moment she became one of my favorite authors. Help, Thanks, Wow is a wonderful book that I have underlined and reread over and over again. Her writing has a voice that many of us can relate to. It's honest and you can feel her pain. She writes with humor to balance the good with the bad. Something that is so important to learn as we go through life. Her descriptions help you see, feel, and smell when she describes "autumn...the colors are broccoli and flame and fox fur. The tang is apples. The rot smells faintly of grapes..." She tells us how to ask for help when you can't do it all by yourself, but how important it is to say thank you, thank you, thank you and Wow for all the things you are grateful for. I loved when she wrote about how service to others is joy ,but how important it is to be kind to yourself. One of my favorite passages was this one, "This morning at six when I awoke, loneliness was sitting on my chest like a dental X-ray apron, even though I was buried in hairy dog love. Help, I am sad and lonely, and already it looks like today is going to be too long. I prayed...I did a kindness to myself, as I would have a troubled friend..." Her descriptions are all like this one and easy to relate to. I loved this book and have given it to friends who have then bought it for other friends. It is definitely a WOW!!!!
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Reviewed in the United States on May 6, 2014
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SJ
Whiting, US
★★★★★ 3
Not bad, but not my cup of tea
Format: Hardcover
After seeing Anne Lamott on TV, I was impressed with her and checked out this book on Amazon. The reviews were good, so I ordered it. I was a bit disappointed on receiving it, as I didn't like the shape of the book (too small) and I didn't like the type style (too hard to read). Then, I struggled to get into the book. I like to highlight insights in inspirational books, and I simply didn't find anything to highlight in this one. I think Anne Lamott is a lovely person and I understand how a lot of people liked this book. However, it just didn't bring any new insights to the table for me and it wasn't written in a way that I found compelling. The good news is, it wasn't too hard to finish, since it is short. I passed it on to someone I hope will enjoy it.
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Reviewed in the United States on November 26, 2013
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O. Merce Brown
Belleville, US
★★★★★ 5
I Just Want to Read It Again!
Format: Hardcover
***** What a brilliant book! When I first received "Help, Thanks, Wow: The Three Essential Prayers" I too was so disappointed that it was such a small book--tiny, short, maybe an hour's read. Ah, but what an hour! Precious. And to be completely truthful, this book actually took me several hours to read, because I had to put it down, think, cry, laugh, and even--yes--pray. This book is worth your time and attention. I am so glad that I have it in hardback because I will keep it forever and reread it regularly; I am finished reading it and I just want to read it all over again. It is a book about getting through life. It is rich, raw, funny (hilarious, like all Annie Lamott) and written in language so stunning I would have to stop and just read and reread sentences. I feel as though my life has been broken open with a whole new attitude towards prayer, and even more, towards being alive. This is not a religious book at all, but a book for anyone who is spiritually-oriented and maybe especially for those who aren't, because the author writes about prayer in a way that every single person can relate to. This is a book about being real and true and simple and clear and about living a worthwhile life. Don't miss this book. Highly recommended. *****
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Reviewed in the United States on November 15, 2012

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