Protect the reservoir from heat and direct sunlight. Maintain solution temperatures between 68 and 75 degrees F. You may want to bury the reservoir to take advantage of the cool and consistent soil temperatures. You can use aluminum foil to reflect sunlight and keep the reservoir from getting too hot. In really hot climates, you can create a cooling loop, buried in the soil to dissipate heat by having the nutrient pass through it on its way to the injectors (not applicable for the hydroponic planter design). You may need to use a larger pump to overcome the extra resistance inside the additional tubing. Keep any electrical equipment protected from the rain - use only equipment suitable for outdoor use. Hire a licensed electrician to install the proper wiring and outlets to power your outdoor garden.
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