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<h2>Ballasts</h2>
<p><span>Traditional HID indoor lighting kits include a bulb, reflector, timer, electrical inputs/outputs and an internal or external ballast. The ballast </span>regulates voltage and current supplied to the lamp and can be internal and external. </p>
<p><strong>Learn more:<br></strong>-<span> </span><a href="https://growdaddycanada.com/apps/help-center#!does-the-ballast-power-have-to-match-the-bulb" title="Does Ballast power have to match the bulb?">Does the ballast power have to match the bulb?</a> <br>-<span> </span><a href="https://growdaddycanada.com/apps/help-center#!how-to-calculate-light-energy-needs-for-hid-lights" title="How to calculate energy needs for HID grow lights.">How to calculate light energy needs for HIDS</a>  </p>
<p><strong></strong><strong><span>Back to <a href="https://growdaddycanada.com/collections/grow-lights" title="Cannabis Grow Lights">Grow Lights</a></span></strong></p>
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