SKU: 50509404320

Aquavitro Reef Eight.Four

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Description

Aquavitro Reef Eight.FourAquavitro Eight. Four (8. 4) Aquavitro Eight. Four is used to safely raise marine pH while adjusting alkalinity in reef aquaria by providing a balanced buffer system with a pK of 8. 6. Supplies a properly balanced buffer system that yields an industry leading pK of 8. 6 which makes pH maintenance of 8. 3 8. 5 easy Will safely raise marine pH while adjusting alkalinity Many competing buffers for reef aquaria are simply sodium bicarbonate. Such buffers

Aquavitro Eight.Four (8.4)

Aquavitro Eight.Four is used to safely raise marine pH while adjusting alkalinity in reef aquaria by providing a balanced buffer system with a pK of 8.6.

  • Supplies a properly balanced buffer system that yields an industry-leading pK of 8.6 which makes pH maintenance of 8.3-8.5 easy
  • Will safely raise marine pH while adjusting alkalinity

Many competing buffers for reef aquaria are simply sodium bicarbonate. Such buffers have a pK of only 8.0 in saltwater and simply are unable to maintain a pH above 8.0. The low buffering pK is a function of the low carbonate/bicarbonate ratio.

eight.four™ supplies a properly balanced (carbonate/bicarbonate) buffer system that yields an industry leading pK of 8.6 which makes pH maintenance of 8.3-8.5 easy. A higher pK increases the buffer's ability to counteract inevitable acidic sources in the water. eight.four™ will safely raise marine pH while adjusting alkalinity. eight.four™ contains a concentrated, balanced blend of bicarbonate and carbonate salts designed to restore disrupted buffer systems and increase carbonate alkalinity.

If an alkalinity of 6 meq/L has been reached and a pH of at least 8.20 has not been attained, the system may be ionically unbalanced. Check magnesium levels. If magnesium is low, use ions™. However, if magnesium levels are within optimal range, the buffer ratio has likely been disrupted (the buffer ratio changes as a natural consequence of the buffer's ability to counteract acidifying sources such as organic acids). You can raise pH without raising alkalinity using balance™.

Unlike competing products that require multi-day interval dosing when combined with carbonate supplements, eight.four™ can be dosed daily and within minutes of our calcification™ as well as balance™ and ions™

Directions:

Dosing requirements will vary, but do not exceed the recommended dose without checking your pH and alkalinity (alkalinity should not exceed 6 meq/L). Use 5 mL for every 80 L (20 US gallons) daily until pH stabilizes to desired level.

pH stabilization may take from a day to a week, depending on original pH, alkalinity, and buffer system balance. Thereafter, use as needed to maintain pH.

Use Seachem’s MultiTest®: Marine pH & Alkalinity to check pH and total alkalinity. For a complete analysis of alkalinity, use Seachem’s Reef Status®: Magensium & Carbonate/Borate Alkalinity kit.

FAQ:

How much will one dose of eight.four™ raise my alkalinity?

A: Each 5 mL of eight.four™ added to 80 L (20 US gallons) (standard dose) will raise alkalinity by 0.25meq/L (or 0.7 dKH).

I am planning on using eight.four™ in my tank to boost my alkalinity. I see on the bottle that it says it safely raises pH to 8.4. Does this mean you cannot overdose this product?

A: While eight.four™ is certainly a very safe and effective means of adding alkalinity, overdosing is possible with any product. eight.four™ is blended in such a way that allows one to dose a significant amount more than the standard dose without overshooting pH above 8.4. However, your alkalinity can still be overshot causing issues with ionic balance. Significant overdosing of this product could potentially cause too high of a KH, thus resulting in issues with maintaining other parameters, namely calcium. It is always best to test your alkalinity before adding the product and use it as needed.

How do I know if I should use balance or eight.four to raise pH in my reef aquarium? Do they do the same thing?

A: No, these are actually two very different products. eight.four is a buffer that will raise both pH and KH (alkalinity) in your aquarium by adding a blend of buffering agents such as carbonates and bicarbonates to your system. balance specifically targets pH only by re-establishing the proper bicarbonate/carbonate ratio by using a hydroxide blend to raise pH without having an impact on KH, calcium or magnesium levels. If your calcium, magnesium and alkalinity are all in the proper levels but pH is still low, you can use balance to correct this. If calcium, magnesium and/or alkalinity is also low in addition to pH, then you may want to use eight.four in addition to other products in the aquavitro range such as calcification or ions to address any other deficiencies.

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SKU: 50509404320

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Amazon Customer
Boise, US
★★★★★ 4
Soft brush, good quality!
Color: Microbrush Kit
I like that the bristles on the brush are very soft and it's curved well for my kitty's mouth. The only thing that I don't care for is the handle is pretty long and doesn't need to be.
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Reviewed in the United States on May 12, 2025
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S. P.
Massapequa, US
★★★★★ 5
Best best pet toothbrush I have tried
Color: Microbrush Kit
This is by far the best toothbrush I have found for my cat. It was clearly designed by someone who deeply understands feline dental health. The way the bristles decrease toward the tip and the specialized part for lifting the corner of the mouth are incredibly thoughtful and effective features. While the bristles are soft, they are strong enough to provide the necessary pressure against the teeth. My cat has a relatively small head and mouth, yet she resisted this brush the least of all. I will not be going back to my previous toothbrushes. Very highly recommended!
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Reviewed in the United States on March 16, 2026
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Crissi
Natrona Heights, US
★★★★★ 5
Cat approves, easy to use, comfortable to grip, sturdy.
Color: Microbrush Kit, Color: Microbrush Kit
My cat seems to love it so that's a automatic win! I was a little unsure about using a long handled toothbrush, I thought it would be more difficult to use but turns out its actually easier than the little finger brushes. The heads on the toothbrushes can be swapped, making it so that you dont have to buy a whole new one. It's been a few months since I bought it and its holding up well, no major wear on it aside from some gnaw marks from my Chonk chewing on it. Fits nicely in my hand and the brush head isn't too big for my cats tiny faces & teeth. I'd recommend it so far and I'm going to keep on with this brush instead of trying a new product every time.
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Reviewed in the United States on June 4, 2025
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Melissa Cordero
Los Angeles, US
★★★★★ 3
its packaged nice and it is a smaller product to fit in kitty mouths but still not great.
Color: Microbrush Kit
it's a nice product but still doesn't make my cats any easier to brush. Nor does it seem enjoyable. I enjoy brushing my teeth and I want them too also. I believe cats life would be so much longer if we brushed their teeth. Think about how early our ancestors died before proper dental care.
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Reviewed in the United States on April 6, 2025
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Pia
Battle Creek, US
★★★★★ 5
Great Grip and Perfect for Reaching Back Teeth
Color: Microbrush Kit
Summary: A thoughtfully designed toothbrush that makes feline dental care much easier. Pros: • Comfortable, secure grip that makes brushing feel more controlled • Great design for reaching back teeth, which can be the hardest area to clean • My cats don’t mind getting their teeth brushed with this, which is a huge plus • Removable, replaceable brush head, so you don’t have to buy a whole new tool each time Overall: If you’re looking for an effective way to brush your cat’s teeth, this is a very well thought-out design. It worked great with my cats, and I’m genuinely grateful for how much easier it has made our brushing routine.
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Reviewed in the United States on December 6, 2025

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