How far away should my two t8 light fixture be from my plants? I have 12 pepper plants in solo cups under it, how far away from the tops of the plants is optimum for my cheap setup?
+1 to a few inches.. I had my seedlings grrow up into the reflector around the bulbs for a while there .. I uses 4x 6500k T8's per row and had a 16 / 8 light/dark rotation