SKU: 38758475141

API pH Down, 16 OZ

Sale price$78.86 Regular price$87.62
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Ships within 48 hours · Estimated delivery Aug 28 - Sep 2

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Description

API pH Down, 16 OZAPI pH DOWN pH adjuster effectively reduces pH levels to create a more acidic environment for freshwater aquariums, benefiting both fish and plants when the pH rises too high. The pH scale measures how acidic or alkaline water is, with a value of 7. 0 indicating neutrality; values above 7. 0 are alkaline, while those below 7. 0 are acidic. Since various fish species require specific pH levels for optimal health, its essential to routinely check your

API® pH DOWN pH adjuster effectively reduces pH levels to create a more acidic environment for freshwater aquariums, benefiting both fish and plants when the pH rises too high. The pH scale measures how acidic or alkaline water is, with a value of 7.0 indicating neutrality; values above 7.0 are alkaline, while those below 7.0 are acidic.

Since various fish species require specific pH levels for optimal health, it’s essential to routinely check your water to maintain the appropriate pH range. The pH DOWN pH adjuster is quick to act, clear, user-friendly, and will not cloud your aquarium water. Additionally, being free from phosphates and nitrates, it will not promote algae growth.

Use an API pH TEST KIT to check the pH of your aquarium water. To decrease pH, simply add 1 ml for every 10 gallons of water in the aquarium.

Before applying another dose of pH DOWN pH adjuster, ensure you take another pH measurement.

Be mindful that some fish may react sensitively to pH changes greater than 0.2 within a 24-hour timeframe, so such adjustments should be made with caution.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 38758475141

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Rian Burnett
Pawtucket, US
★★★★★ 5
Great thickness and color
Model: Kraft er Paper 002
This paper was great for wrapping Christmas gifts this year. It was a good color white and was easy to write names directly on, no need for tags! The weight of the paper was great and tape also held up easily. It is perfect for medium to small packages. Purchased item.
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Reviewed in the United States on December 29, 2025
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B.Nicole
Massapequa, US
★★★★★ 5
My Go-To Sublimation Paper — Flawless Results Every Time
Size: 8.5"x11", Size: 8.5"x11"
This is hands down the best sublimation paper I’ve used and the only one I continue to buy. I get a perfect transfer every single time—no fracturing, no fading, and no uneven results. The paper dries fast, which makes my workflow so much smoother, especially when I’m producing items in batches. I use this regularly to make air fresheners and tote bags for my small business, and the color payoff is always vibrant and crisp. The transfer rate is excellent, and it works beautifully on light-colored, high-quality polyester and other sublimation-ready surfaces. If you’re a small business owner or crafter who values consistency, quality, and ease of use, this paper is absolutely worth it. I highly recommend it and will continue to repurchase.
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Reviewed in the United States on January 24, 2026
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Jimmy
Phoenix, US
★★★★★ 5
Best Sublimation Paper
Size: 8.5"x11"
I’ve been using A-Sub paper for my sublimation projects, and it is easily one of the best. The ink dries almost instantly once printed, so I don’t have to worry about smudging the design or getting those annoying "pizza wheel" marks from the printer rollers. The paper itself feels substantial and doesn't tear or curl easily. One of the biggest wins for me is that it never jams; it feeds through perfectly every time, saving me the frustration of wasting expensive ink and paper. When I go to press my designs, the ink releases almost completely, leaving very little behind on the paper and putting all that color onto the project. The final results look super professional, with colors that are vibrant and sharp rather than looking faded or dull. It has worked perfectly for everything I’ve tried so far, and if you want a reliable paper that gives you consistent, high-quality results, this is definitely the one to get.
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Reviewed in the United States on February 25, 2026
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Nadiagne
West Palm Beach, US
★★★★★ 5
Ideal for sublimation beginners.
Size: 8.5"x11"
Asub sublimation paper has been excellent for my projects. The ink transfer is very good, the colors are vibrant and defined, and it dries quickly. It has helped me achieve clean and professional results, even as a beginner. Without a doubt, it's a reliable, high-quality paper for sublimation.
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Reviewed in the United States on February 15, 2026
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Chiller Leonard
Draper, US
★★★★★ 5
Excellent works great and I’m bang for your buck
Size: 8.5"x14"
I love this paper. It prints, nice and clear I will be buying more.
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Reviewed in the United States on April 30, 2026

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