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Quantity
1
Condition and pH balance your water with ease.
Our pH Down solution contains stable phosphoric acid, allowing you to quickly adjust water from your hose or tap to its ideal pH level. Designed to support consistent water quality, it’s an essential tool for anyone using the Lettuce Grow pH Test Kit.
4.7
35 ratings
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pH Down works
This liquid pH down works great for leveling out the acidity in your water supply.
A
Alyson · October 20, 2026
Easy to use.
Love this product. Vegas water needs around 6 with a fill up and 9 with a start off. Would love a larger size in the future.
N
Nicole · September 21, 2026
Plant RX
Our local tap water is so out of balance with chemicals. This product helps my plants have a fighting chance at survival.
