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API pH DOWN Freshwater Aquarium Water pH Reducing Solution 4-Ounce Bottle

API
(29)
29 Reviews
|Answered Questions
API pH DOWN Freshwater Aquarium Water pH Reducing Solution 4-Ounce Bottle removed from the wishlist
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API pH DOWN Freshwater Aquarium Water pH Reducing Solution 4-Ounce Bottle

API
(29)
29 Reviews
|Answered Questions

New Customers: $15 off $49+ with NEWPETCO15

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Description

Please note that the product information displayed is provided by manufacturers, suppliers and other third parties and is not independently verified by Petco.

If you're a fish enthusiast, you know that pH levels are super important for your underwater friends to thrive. With this 4-ounce bottle of magic, you can easily adjust your aquarium's pH to the perfect level for your fishy friends.

  • - Say goodbye to algae growth! This solution has a special formula that won't promote algae growth when adjusting your pH levels
  • - Safe for all your aquatic buddies! This solution is safe for both plants and fish, so you don't have to worry about any harm coming their way
  • - Keep your water pristine! By slowly neutralizing alkaline substances that cause high water pH, you can trust that your aquarium will have the perfect pH balance
  • - Perfect for new aquariums or water changes! Whether you're setting up a new aquarium or just doing a water change, this solution is the perfect tool to help you achieve the ideal pH levels
  • - Test weekly for optimal results. It's recommended to test your aquarium's water weekly to ensure the perfect pH balance
  • - A variety of pH options for specific fish types! Different types of fish have different preferences when it comes to pH levels. This solution allows you to tailor the pH levels specifically to your fishy friends' needs. For example, mollies and swordtails thrive at pH 7.2 to 7.5 while angelfish and neon tetras prefer a pH of 6.5 to 6.8

Specifications

SKU114162
Primary BrandAPI
Days to ShipShips Next Business Day
Weight4 OZ

Additional Features

Personalized Item flagNo

Test water weekly and use to correct pH level in freshwater aquariums

Reviews

Rating Snapshot

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5 stars

23

4 stars

0

3 stars

0

2 stars

1

1 stars

5

Overall Rating

4.2
21 out of 29 (72%) reviewers recommend this product

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Most Helpful Favorable Review

It works

Cls47

5 years ago

I am on a well. My water checks out at 28 grains hardness. I have a water soften...

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7 PEOPLE FOUND THIS HELPFUL

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5

and

4

Most Helpful Critical Review

I don't think it works

Glofish gal

2 years ago

I had a brand new setup (no fish) where the ph was about 7.8. in my 40 gallon ta...

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4 PEOPLE FOUND THIS HELPFUL

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3

2

and

1

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Rating
1 - 8 of 23 Reviews
Most Recent

6 Ratings-Only Reviews

No way to measure

Emma82837483

4 months ago
Just bought and it comes with no way to measure product so pretty pointless

No, I do not recommend this product.

Helpful?

I don't think it works

Glofish gal

2 years ago
I had a brand new setup (no fish) where the ph was about 7.8. in my 40 gallon tank I used about half the bottle and saw no change in ph. Only after I added a general water balancing agent did I see the ph drop. If this is really sulfuric acid in a bottle, the ph should've dropped significantly with how much I used (I mixed the water manually and tested after about 10 minutes so I know nothing in the tank was re-raising the ph)

No, I do not recommend this product.

Helpful?

ApI Pph Down

Gyos Mom

2 years ago
Awesome stuff, helps for and instead change in ph level

Yes, I recommend this product.

Helpful?

This pH down works amazing!

Great glass top

3 years ago
This worked excellent for my tank although I did have to do a 2nd dose it really works. This was a new tank that had not been cycled yet and it brought down the ph levels to make it safe for my fish

Yes, I recommend this product.

Helpful?

The bottles must be switched...

billnyethesciencefry

3 years ago
After testing my water, the pH was high and the alkalinity tested high as well. I used pH down and the pH went up. I think the bottles are switched, and I don't want my fish to die because of a factory mistake!

No, I do not recommend this product.

Helpful?

Down with the PH.

Chico14a

3 years ago
Works in minutes. I needed to bring down my ph fast and this works.

Yes, I recommend this product.

Helpful?

Works well lowering pH.

Dicky73

3 years ago
If you want to lower the pH in your water, this product is all you need. It doesn’t take much, my tapwater is way up in the 7pH maybe even as high as 8pH range, I feel up a gallon of water then add 1/3 Tsp that’s 1.65 milliliters of pH down and my gallon of water is around 6.2 - 6.3. Like I said you don’t need to use much. Like all things it takes some getting used to but once you get it down pat you’ll have no problem using this product.

Yes, I recommend this product.

Helpful?

It works

Cls47

5 years ago
I am on a well. My water checks out at 28 grains hardness. I have a water softener which does an excellent job but I still have to use this in the aquarium. 55 gal tank I had to treat it twice to get the change needed.

Yes, I recommend this product.

Helpful?
1 - 8 of 23 Reviews

Questions

1 - 10 of 11 Questions
Sort by: Newest Answers
2 years ago

This says for "freshwater" can it not be used in a saltwater tank? Is there a different product specifically for a saltwater tank? Thank you

    3 years ago

    Can I put this in while fish are in the tank?

    1. 3 years ago
      Yes. I have added it right to my 28 gallon tank by the filter, but usually I put it in the water I’m adding to the tank before I dump it in. I was told aquarium salt could work well for even a fresh water tank for ph, I’m trying that because my ph is always a bit high even with ph down. 



    3 years ago

    Is this safe for red eared sliders/turtles?

    1. 3 years ago
      Yes, you may use this product with turtles.



    3 years ago

    What are the ingredients?

    1. 3 years ago
      Please visit API's website for additional product information.



    3 years ago

    How long does it take to lower it i does it an about 1.5 hours later ph was the same

      4 years ago

      Will this kill or affect shrimp in any way?

      1. 4 years ago
        pH down is not harmful to shrimp or crustaceans.



      4 years ago

      Can this be used at the same time as medication? I was going to use the Tetra brand lifeguard remedy to treat what looks like fin rot on my rescue betta, but the water PH in his new tank also needs to be lowered. 

      1. 4 years ago
        First, check your ammonia level. If the new tank has had fish for a few days you probably have an ammonia spike too. Tap water also usually has a higher pH. Before dosing the tank, change 50% of the water. Lower the pH of your new water too desired level. Add it back to tank. Then dose for for the fin rot. Keep repeating this procedure for each dosing till pH comes down and hopefully rot goes away. A tablespoon of kosher salt/10gal and just clean water go along way for fin rot sometimes too.



      4 years ago

      My PH and Ammonia is high, will this help with both or just the PH level?

      1. 4 years ago
        this will only change the ph



      4 years ago

      My PH and Ammonia is high. Will this help with both?

      1. 4 years ago
        No, if you lower the pH while the tank has ammonia in it, the NH4+ ion will be pushed out of solution and become more toxic as NH3 (ammonia). You must change water. Remove, 30-50% of water and replace slowly with lower PH water. There is no other solution. Look up how the biological filtration process works!!!!!



      5 years ago

      How long should it take before the PH changes?

      1. 5 years ago
        You want to go slowly on changing the pH otherwise you will kill your fish. Add the pH adjuster wait 2 to 3 days then test your water if you don't see any difference as adjuster again. Wait for 3 days then test. If nothing has changed you may need to do a partial water change. Be careful with changing the pH to fast.



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