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  • Nutrafin A7960 Bio-Clear Biological Water Clarifier, 4.1-Ounce
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Nutrafin A7960 Bio-Clear Biological Water Clarifier, 4.1-Ounce

4.4 out of 5 stars 409 ratings

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Brand Hagen
Liquid volume 120 Milliliters
Item weight 0.32 Pounds
Item form Liquid
Target species Fish
Manufacturer Nutrafin
UPC 015561179607
Global Trade Identification Number 00015561179607

About this item

  • Biologically clarifies cloudy aquariums
  • Non-toxic, won't harm your betta
  • Works within 24-48 hours
  • For freshwater aquariums only

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Product description

Nutrafin Bio-Clear features a responsive enzyme based formula that metabolizes food sources for free floating bacteria that create cloudy aquarium water. Nutrafin Bio-Clear biologically clarifies cloudy aquariums caused by new tank syndrome, excess food, organic waste and decaying plant remnants. Nutrafin Bio-Clear works within 24-48 hours.

Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 4.57 x 4.57 x 12.7 cm; 146.96 g
  • Date First Available ‏ : ‎ Aug. 7 2012
  • Manufacturer ‏ : ‎ Nutrafin
  • Place of Business ‏ : ‎ Baie-D'Urfe, Quebec H9X 0A2, CA
  • ASIN ‏ : ‎ B0026CEZKQ
  • Item model number ‏ : ‎ A7960
  • Country of origin ‏ : ‎ Canada
  • Customer Reviews:
    4.4 out of 5 stars 409 ratings

Product information

Technical Details

Manufacturer ‎Nutrafin
Place of Business ‎Baie-D'Urfe, Quebec H9X 0A2, CA
Item model number ‎A7960
Product Dimensions ‎4.57 x 4.57 x 12.7 cm; 146.96 g
ASIN ‎B0026CEZKQ

Additional Information

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Nutrafin A7960 Bio-Clear Biological Water Clarifier, 4.1-Ounce


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Top Brand: Hagen

Highly Rated
100K+ customers rate items from this brand highly
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Important information

Directions

Clarifies cloudy aquarium water through biological means. Use in 24 to 48 hours, safe for bettas, and only for freshwater aquariums.

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Customer reviews

4.4 out of 5 stars
409 global ratings

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Customers say

Customers like the water cleaning and quality of the product. They mention it works well for clearing up cloudy water fast and removes life plants prior to using. Some also say it's worth buying and has a great price.

Select to learn more

23 customers mention "Water cleaning"17 positive6 negative

Customers are satisfied with the water cleaning product. They mention it works great for clearing up cloudy water fast, removes life plants prior to using, and is the best way to get a clear tank.

"Works great..." Read more

"...bad algae bloom recently and it took a few doses but this stuff really cleaned it up. I did 2.5ml once a day for 3 days and the tank is so clear." Read more

"...of last year however, the unfortunate side apart is it killed my life plants in the tank...." Read more

"...This is the best way to get a clear tank!" Read more

7 customers mention "Quality"7 positive0 negative

Customers are satisfied with the quality of the product. They mention it's worth buying and has a great price.

"...to ni if it holds up against other competor brands but it is worth buying and having on hand for anytank" Read more

"great product , a little pricey for the amount in the bottle though." Read more

"Great product. Helps clear up a dirty fishtank" Read more

"this is a very good product" Read more

I'm sold
5 out of 5 stars
I'm sold
So originally didn't have high hopes for this product until I saw what the tank looked like today. My black Orchid Male Betta Crash he's an aggressive jumpy brat but I love him lives in a 6 gal filtered tank and is Thriving ! I've had him for about three weeks. I also have a heater I don't need right now as the temperature in this room seems to allow the tank to remain consistently at 80 degrees check everyday and spikes the temp higher than I'd like right now. I check ever day every hour night or day. And before bed never changes and if it does very miniscule I also check water parameters.. I may need my heater in the fall who knows. Anyways The filter that came with this tank has one of the poorest made filter cartridges I have ever seen literally unravels over time and turns my tank into a snow globe. I busted out this bad boy dumped what I needed in went to bed woke up and was floored .will buy again I debated returning the water conditioner I bought of this brand back to the pet store I bought it from due to it slightly tinting the water an off white yellowish . But I had a change of heart after I used this product it softened the look of the water and tank I have never EVER had my tank this crystal clear before I am blown away. Now I like that conditioner too and will buy that in the future too. Here is my happy boy!
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Top reviews from Canada

  • Reviewed in Canada on March 22, 2025
    Verified Purchase
    Rarely do I leave positive reviews on stuff I buy on 鶹. My 10g tank had a really bad algae bloom recently and it took a few doses but this stuff really cleaned it up. I did 2.5ml once a day for 3 days and the tank is so clear.
  • Reviewed in Canada on July 13, 2025
    Verified Purchase
    Rick absolutely fantastic when I was going through a crazy LG bloom at the end of last year however, the unfortunate side apart is it killed my life plants in the tank. I guess I should’ve somewhat anticipated that happening given the fact of its job. I can always buy new live plants. That’s not an issue. At least my tank is clean and no longer.
  • Reviewed in Canada on July 28, 2022
    Verified Purchase
    The media could not be loaded.
    So originally didn't have high hopes for this product until I saw what the tank looked like today. My black Orchid Male Betta Crash he's an aggressive jumpy brat but I love him lives in a 6 gal filtered tank and is Thriving ! I've had him for about three weeks. I also have a heater I don't need right now as the temperature in this room seems to allow the tank to remain consistently at 80 degrees check everyday and spikes the temp higher than I'd like right now. I check ever day every hour night or day. And before bed never changes and if it does very miniscule I also check water parameters.. I may need my heater in the fall who knows. Anyways The filter that came with this tank has one of the poorest made filter cartridges I have ever seen literally unravels over time and turns my tank into a snow globe. I busted out this bad boy dumped what I needed in went to bed woke up and was floored .will buy again I debated returning the water conditioner I bought of this brand back to the pet store I bought it from due to it slightly tinting the water an off white yellowish . But I had a change of heart after I used this product it softened the look of the water and tank I have never EVER had my tank this crystal clear before I am blown away. Now I like that conditioner too and will buy that in the future too. Here is my happy boy!
    Customer image
    5.0 out of 5 stars
    I'm sold

    Reviewed in Canada on July 28, 2022
    So originally didn't have high hopes for this product until I saw what the tank looked like today. My black Orchid Male Betta Crash he's an aggressive jumpy brat but I love him lives in a 6 gal filtered tank and is Thriving ! I've had him for about three weeks. I also have a heater I don't need right now as the temperature in this room seems to allow the tank to remain consistently at 80 degrees check everyday and spikes the temp higher than I'd like right now. I check ever day every hour night or day. And before bed never changes and if it does very miniscule I also check water parameters.. I may need my heater in the fall who knows. Anyways The filter that came with this tank has one of the poorest made filter cartridges I have ever seen literally unravels over time and turns my tank into a snow globe. I busted out this bad boy dumped what I needed in went to bed woke up and was floored .will buy again I debated returning the water conditioner I bought of this brand back to the pet store I bought it from due to it slightly tinting the water an off white yellowish . But I had a change of heart after I used this product it softened the look of the water and tank I have never EVER had my tank this crystal clear before I am blown away. Now I like that conditioner too and will buy that in the future too. Here is my happy boy!
    Images in this review
    Customer imageCustomer image
    2 people found this helpful
    Report
  • Reviewed in Canada on August 1, 2018
    Verified Purchase
    So i reviewed this product and gave it 3 stars i said i might update and this is the update! It did take a few days probly even longer then the 48 hpurs it says it may take but then again my tank was very very dirty and we just had a bunch of new fish born so maybe that played apart. It does work tho and i have even ordered it again a few more times because it does give you a longer time between tank cleanings amd thats just down right awesome. I gave it a 4 because i dont no enough about this product to ni if it holds up against other competor brands but it is worth buying and having on hand for anytank
    4 people found this helpful
    Report
  • Reviewed in Canada on March 26, 2025
    Verified Purchase
    Package arrived on time
  • Reviewed in Canada on May 22, 2024
    Verified Purchase
    I've used this for a few weeks and I've done a few doses. There's enough in the bottle for doses when you change water or whenever it's needed. This is the best way to get a clear tank!
    4 people found this helpful
    Report
  • Reviewed in Canada on September 8, 2024
    Verified Purchase
    Won’t use again
    Messed up the water
    Couldn’t fix it
  • Reviewed in Canada on June 27, 2024
    Verified Purchase
    Smaller bottle then I thought lol but did the job as should !

Top reviews from other countries

  • Redwood Coast Hiker
    5.0 out of 5 stars AWESOME CLARIFYING PROPERTIES
    Reviewed in the United States on January 2, 2011
    Verified Purchase
    This product does exactly as it says. It's amazing to see how it clears up murky and cloudy water created by bacterial issues in the fish tank safely. I have large tropical fish, a 100 gallon aquarium and my fish tank gets cloudy at times even with the proper water settings and cleanings. This product clears and brightens the water in record time and it's amazing to see. It's part of my normal fish routine when neccessary. It is easy and safe to use and works every time. I have used this product for over 6 years until the local pet store was sold and the new owners no longer stocked it. Thrilled to have found it on 鶹! It's a must have product for fish owners. Makes the chore of keeping the tank looking fresh and clean a breeze.
  • Alejandro
    5.0 out of 5 stars TADA! Magic.
    Reviewed in the United States on July 13, 2013
    Verified Purchase
    This product works!! I just set up a new 1.5 gallon Betta tank. It has a filter and I'm very careful not to over feed. Within 4 days the tank water was cloudy, so I decided to buy this product. I got it yesterday at 3 PM and put in just a few drops, since it is such a tiny tank. By 10 AM this morning the tank water is perfectly clear, it didnt even take a full 24 hours like the directions describe.
  • SonicAddiction
    5.0 out of 5 stars Works well if you follow directions and have patience
    Reviewed in the United States on November 14, 2013
    Verified Purchase
    Not all water clarifiers work but this one does. You just need to follow instructions and do not panic if your water looks worse than before. It will depending on the cause of cloudiness. If you have an overcrowded tank, this will not help. You may need to do a partial water change also, depending on the cause of your problem, also a new filter after the treatment will help.
  • C.J. Bruns
    4.0 out of 5 stars Does what it says!
    Reviewed in the United States on April 4, 2012
    Verified Purchase
    This stuff clears up your tank fast. It does take a few hours but it certainly works. I usually add this at night and by morning my tanks look great. You do need to watch your filters because this really does work on breaking things down. You filter can easily become clogged after using this product. As long you keep and eye on it, you won't have any issues. I have tried lots of products and I always come back to this one.
  • Matthew R Bruni
    5.0 out of 5 stars Crystal Clear Water
    Reviewed in the United States on December 8, 2011
    Verified Purchase
    This product is truly one of a kind. I have used other types of water clarifier over the years but nothing compares to this. My water is always clean and clear but its only sometimes perfect. Half an hour after adding this I can see a big improvement, but the biggest difference is if you give it a day to work it's magic. It uses enzymes to digest certain nutrients and clear the water of that white bacterial cloud. This probably wont help if you have an algae bloom and its perfectly safe. If your using this on an aquarium that is new or overstocked you need to fix those issues first.

    Also it is important to note that this is not a flocculation agent like 99% of other clarifiers. This removes white haze that is caused by bacteria. If your aquarium is dirty this will not help.

Product Summary: Nutrafin A7960 Bio-Clear Biological Water Clarifier, 4.1-Ounce

From Hagen

4.4 out of 5 stars, 409 ratings

Customer reviews

200+ bought in past month

Price

No featured offers available

Other sellers

Other sellers

About this Item

  • Biologically clarifies cloudy aquariums
  • Non-toxic, won't harm your betta
  • Works within 24-48 hours
  • For freshwater aquariums only

Product description

Nutrafin Bio-Clear features a responsive enzyme based formula that metabolizes food sources for free floating bacteria that create cloudy aquarium water. Nutrafin Bio-Clear biologically clarifies cloudy aquariums caused by new tank syndrome, excess food, organic waste and decaying plant remnants. Nutrafin Bio-Clear works within 24-48 hours.

Important Information

Directions

Clarifies cloudy aquarium water through biological means. Use in 24 to 48 hours, safe for bettas, and only for freshwater aquariums.

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