SKU: 81427813100

API pH Up

Sale price$115.20 Regular price$128.00
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Description

API pH UpAPI pH Up API pH Up is a pH adjuster that raises pH levels in aquarium water to make it more alkaline when levels fall too low. API pH UP pH adjuster raises pH levels in your aquarium to make water more alkaline when levels fall too low. pH is the measure of acidic or alkaline conditions in water, where a value of 7. 0 corresponds to a neutral pH, pH values about 7. 0 are considered alkaline, and pH values below 7. 0 are considered acidic. Different

API pH Up

API pH Up is a pH adjuster that raises pH levels in aquarium water to make it more alkaline when levels fall too low.

API® pH UP pH adjuster raises pH levels in your aquarium to make water more alkaline when levels fall too low. pH is the measure of acidic or alkaline conditions in water, where a value of 7.0 corresponds to a neutral pH, pH values about 7.0 are considered alkaline, and pH values below 7.0 are considered acidic. Different fish need different pH levels to be healthy, so it is important to test your water regularly to ensure pH levels fall where they should. pH UP pH adjuster is fast-acting, colorless, easy to use, and will not cloud aquarium water. Because it is phosphate-free and nitrate-free, pH UP pH adjuster will not encourage algae growth.

Instructions
Determine the pH of aquarium water with an API pH TEST KIT. To raise pH, add 1 ml. for each 10 gallons of aquarium water. Take another pH reading before adding another dose of pH UP pH adjuster. Some fish may be sensitive to pH adjustments greater than 0.2 in a 24 hour period, so changes of this magnitude should be done with extreme care.

FAQS

What does API pH UP™ pH adjuster do?
API pH UP pH adjuster is added to water to raise pH levels, making water more alkaline.

Can I use repeated doses of API pH UP™ pH adjuster?
Yes, you can use API pH UP pH adjuster once daily in your aquarium, but you should always test the pH between doses.

Can API pH UP™ pH adjuster be used in marine aquariums?
API pH UP pH adjuster will not cause any harm to marine aquariums, but it is designed specifically for fine-tuning pH, and is not strong enough to have an effect on marine aquarium levels.

Can API pH UP™ pH adjuster be used with live plants?
Yes, API pH UP pH adjuster and API pH DOWN™ pH adjuster are safe for live plants.

Does API pH UP™ pH adjuster also increase KH?
Yes, pH UP™ pH adjuster can help to increase KH.

Dosing Calculator
Add 1 ml. for each 38L of aquarium water.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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SKU: 81427813100

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Cmk
New York, US
★★★★★ 5
What A Find! Unbelievable Quality and Price!
Special Size: Standard, Size: Large, Color: Plaid-light Blue
I can't believe the quality of this shirt!! I ordered the blue checked one for my husband for a costume. The price was right and I didn't expect much, as it was just for a costume. It came packed into a little box, which I figured showed it would be super thin and cheaply made, but didn't really care as only needed it for one time. Woah!!!! I opened the box and was absolutely floored by the quality and heft to the material. It is crazy. I don't know how they get this shirt into that box, but it is baffling. This shirt is of high quality, with all the seems sewn well. The fabric is every bit as good as the brand of oxford shirt that costs 3 times the price of this one. My husband goes between medium and large. He takes 16" neck in dress shirts. We ordered the large and it fits well. Has a little room, but not in a too big type of way. I washed it once before wearing, and it washed well. Not much shrinking at all. It ironed very easily without a problem. Yes, it is 100% percent cotton. Because of the quality and fit, I will now order additonal colors. My husband loves this shirt. This is an excellent buy!!!
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Reviewed in the United States on August 30, 2025
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Kindle Customer
Birmingham, US
★★★★★ 5
Great shirt!
Special Size: Standard, Size: X-Large, Color: Dark Green
My partner loves this shirt and is very particular. He likes the green color and that it is cotton. Bought more colors from this company. Runs true to size.
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Reviewed in the United States on June 1, 2026
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Amazon Customer
Charlottesville, US
★★★★★ 5
Great shirt
Special Size: Standard, Size: Large, Color: Dark Green
Very nice fit, great color. Seems like it'll last a long time. I used it for St paddies day but will be wearing it a lot more. Love the style of it. Comfortable martial too
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Reviewed in the United States on March 25, 2026
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Yvonne
Bozeman, US
★★★★★ 5
Nice shirt!
Special Size: Standard, Size: Large, Color: White
Fits well. Large is true to size. Soft and breathable. My husband was a Brooks Brothers only shirt wearer. He likes the pinpoint cotton. I washed it cold and dried it on delicate cycle. It is slightly wrinkled but perfect to wear casually with blue jeans.
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Reviewed in the United States on April 8, 2026
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Joseph
Los Angeles, US
★★★★★ 3
Not too bad for the cost but could be better.
Special Size: Standard, Size: 3X-Large, Color: Navy Blue
I like the shirt. It fits well and color is as described. Main reason for 3 stars is that they do a lousy job with sewing on the buttons.
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Reviewed in the United States on May 9, 2026

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