buying a nutrient reservoir consider the following points:
- Material: Food grade plastic is best. It will not
corrode and it is easy to attach fittings.
- Color: Ensure the plastic is black and/or opaque.
This prevents light transmission and reflection which can destabilize
chelated trace elements and encourage algae growth.
- Shape: It is easier to stir nutrient in a round
reservoir compared to those that are rectangular or square.
- Lid: A reservoir lid is essential for preventing
light and dirt ingress and to minimise evaporation. However, position the
lid ~2 inches above the reservoir to allow aeration. Failure to do so will
create a humid environment that will encourage the growth of fungus or