Flairform pH Up & Down Kit - For Hydroponics (250mL) varo__12 For nutrient solutions

For nutrient solutions

5 is recommended to allow for increase in pH over the course of the day

which refers to the total ionic content (dissolved salts) in a solution

these pens offer a range of in-built measurement units

Though this method has it's merits

Flairform pH Up & Down Kit - For Hydroponics (250mL) varo__12 For nutrient solutionsIntroducing Flairform pH up & Down Kit For Hydroponics The working nutrient pH should be checked at the following times: 1. When first made. 2. After the addition of top up water or additives especially if either is highly alkaline. 3. In recirculating systems, pH should be checked on a daily basis because the uptake of water and nutrients causes pH to change. NOTE: It is best to adopt a pH maintenance regime that helps prevent pH from getting too