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Testing the dissolved oxygen
concentration.
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The chemical make-up of the water will influence the availability of plant nutrients in it.
Substrate factors such as pH and dissolved oxygen concentration will affect the availability of nutrients. Water alkalinity (i.e. carbonate content of the water) will dramatically influence the level of dissolved carbon dioxide in the water. Fortunately, most plants (particularly weed species) will tolerate a wide range of water conditions, therefore there is little use spending valuable time and resources attempting to change or condition the water to suit the plant. The emphasis should be put on preventing large fluctuations in water chemistry, which can have greater effects on plant growth. |
