Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 27 - Jul 2
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Description
Advanced Nutrients pH Up (23L)Say goodbye to nutrient lockout and hello to heavier harvests. Our scientists engineered pH Up with potassium hydroxide and pH Down with Phosphoric Acid, so you can easily achieve the ideal pH levels for optimal nutrient absorption. Weve developed these highly stable buffers to give you precise control over your pH, even after dilution or adjustments between reservoir changes. Recalibrate pH levels with maximum buffers Highly concentrated formulas for
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- Free Standard Shipping on $100+ Orders to the USA.
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- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.2 ★★★★★
Based on 1767 reviews
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Product Reviews
★★★★★ 5
Soft, moisture wicking
Color: Stormy Grey, Size: Standard
Super soft pillow cases, very nice against face. They are also moisture wicking and dont seem to hold heat. My new favorite brand of sheets/pillows/pillowcases and maybe one day a bed.
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Reviewed in the United States on September 24, 2025
★★★★★ 5
Miracle. It's a miracle.
Size: Standard (Medium)
After years and years of searching for a comfortable pillow, I've finally found it!
I was hesitant to try latex because I have severe sensory issues and thought it would be weird, smelly and maybe noisy. I really couldn't envision how it would work.
The reality is a perfectly bouncy soft pillow that supports your head and neck at just the right height and has immediate bounce back so that when you turn in the night you don't have to waste hours or even minutes fluffing plumping positioning or any other nonsense... You just flip yourself over and go back to sleep. It's a friggin miracle!!!
There is a very faint though tolerable and fading scent of balloons. Not too bad for me, but might be annoying to some.
Overall, thank goodness I bought this pillow. I'm tempted to replace all my pillows with latex ones but... I don't really need any other pillows now! Maybe I will just so I have spares or something.
Granted, it's only been about a week but I expect it to be fairly durable and hold it's quality for quite a while.
So thrilled! Just so happy with this purchase! Ten stars, ten hearts!
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Reviewed in the United States on November 18, 2025
★★★★★ 5
Very Firm Latex Medium, Appears Well-made
Size: Standard (Medium)
I love latex pillows, used them for decades. Then I got led astray! My neck reminded me I need firm, but soft and bouncy. This pillow is surprisingly firm for a medium. So think twice before ordering firm.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Superb neck support
Size: Standard (Medium)
Best sleep. Nothing like it.
Almost buoyant on my heavy neck
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Reviewed in the United States on May 5, 2026
★★★★★ 4
Comfortable but smaller than a standard pillow.
Size: Standard (Medium)
The pillow is bit smaller than standard length wise. It takes a while for the smell to go away. Very comfortable pillow.
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Reviewed in the United States on February 12, 2026
