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USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 19 - Jun 24
For Your Every Summer RSVP, with Code: SUMMER15
Description
Advanced Nutrients pH Up (1L)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

Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.2 ★★★★★
Based on 2202 reviews
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Product Reviews
★★★★★ 2
Makes a lot of noise when walking
Size: 10, Color: Black
I wore this for the first time, and it kept making swushing noises. It was extremely embarrassing to walk around on them. However they are comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 20, 2025
★★★★★ 5
Elegant
Size: X-Large, Color: Black, Size: X-Large, Color: Black
Good quality, soft fabric, right fit. Looks elegant It wrinkled very little in the suitcase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Very nice shirt
Size: X-Large, Color: Indigo Blue
Got this button down shirt for my husband. It fits perfect, and looks really good on him. Quality is good and washes up well. I just don't put it in the dryer
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
★★★★★ 4
My husband liked it
Size: Large, Color: Navy Blue
This shirt is lightweight and comfortable and looks just like the picture. No stretch and true to size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Good looking shirt!
Size: Medium, Color: Indigo Blue
This shirt has nice fabric and not hard to iron.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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