Aqualine pH StickAqualine pH Truncheon Measure the pH of your garden with ease. This Aqualine stick provides results in seconds and is small enough to keep on hand. It's important to know the conditions your plants are growing in; there's no use in all the effort if the soil is harmful. Fertiliser that is too acidic may be prone to nutrient leaching, leading to wilting and yellow spots. Overly alkaline soil reduces its solubility, and plants may have stunted growth or