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pH Up & pH Down – 1 Litre / 1 Quart


Quantity In stock
Free delivery over $100

Frequently Bought Together

Price for all:   $31.98


pH is a measurement of the acidity or alkalinity of a solution. A solution is acidic if the pH is between 0 and 6.9 and it is alkaline if it is between 7.1 and 14. The ideal pH for most hydroponic nutrient solutions is between 5.8 and 6.2, with some exceptions.

The pH of a nutrient solution is one of the most important factors for the uptake rate of essential nutrient ions. Maintaining your pH within the correct range will give your plant access to all the essential ions for optimal growth.

Nutrient lockout will occur if pH levels are outside optimal levels.

Key Features:

  • pH Up contains Potassium Bicarbonate to act as a buffer to minimize the need for further adjustment once the solution is at the ideal pH
  • pH Up contains Potassium Hydroxide which rapidly increases pH at small doses
  • Extra Potassium from pH Up is essential for keeping the proper osmotic balance inside the plant
  • Works alongside, and in addition, to all industry leading manufacturer feed schedules
  • Concentration of active ingredients on par with competitor brands
  • Works for all grow media and methods

pH Up: Potassium Hydroxide 20%, Potassium Bicarbonate 11%

pH Down: Phosphoric Acid 37.5-40%

Directions for Use:

  • Measure the pH of your nutrient solution with a meter.
  • Add small amounts of pH up or down to your nutrient solution, mix well then measure again.
  • Repeat this process until you reach your desired pH levels.


CAUTION All chemicals must be stored out of reach of children. pH Up and pH down is extremely corrosive, do not swallow. Avoid contact with eyes, skin, and clothing. Wear rubber gloves and safety glasses.


Fully compliant with Transport Canada’s requirements including UN rated packaging. Products conform to Heath Canada’s Consumer Chemicals and Containers Regulations labeling requirements, as well as the use of child resistant caps. Future Harvest is completely open with the ingredients of these products.


pH Down 1 litre, pH Up 1 litre


The Npsoils online store ships all over Canada and the United States from Canada.

All orders are processed within 1 business day.

Your order will be marked as fulfilled from the moment it’s been boxed up in the warehouse awaiting for the courier to pick it up. Once your order has been fulfilled, you will receive an email with your tracking number. Your tracking details will appear once the courier has processed the package.

We deliver packages through the following couriers: Canada Post, UPS, Canpar, and Purolator. The courier will be chosen based on the fastest estimated shipping time. 

We currently only ship to PO Boxes across Canada via Canada Post. If you enter a PO box for a US order, we will contact you to provide an alternative delivery address.





In Canada, we offer free shipping over $100 CAD before tax. In the United States, we offer free shipping over $150 CAD. 



All Npsoils online orders will be shipped out in branded boxes. If you would like discreet shipping, simply request for it in the shipping notes section on the cart page. 



Shipping Times
British Columbia 
2-3 business days 
& Manitoba 
3-5 business days 
Ontario, Quebec,
Newfoundland & Labrador,
& PEI 
3-7 business days 
USA 7-15 business days 



Nutrients can freeze when exposed to cold temperatures. We protect your packages by shipping liquid nutrients with heat packs and faster shipping methods during the winter months. Depending on courier, your package may not be sent out until the following Monday to ensure it does not sit in a cold warehouse over the weekend. If your nutrients freeze, simply mix the entire bottle with an equal amount of hot water (preferably reverse osmosis or distilled water) and double your dosage.

Occasionally, our online inventory is inaccurate. In the case we cannot fulfill your order due to an item being out of stock, we will contact you within 24 hours whether to cancel the order or wait for the item to be back in stock. 

We reserve the right to cancel & refund any order where we cannot economically ship to. If this happens you will be refunded in full and notified of the issue. 

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