13 watt, are they foot longers or what ? 6 plants under 26 watts would be fine while they are babies. Keep within one to one and half inches of top of plants. Dont fire off that HPS and bake them while they are babies. Keep plants within a 1' square footprint under the T5's. Oh, and get a fan blowing gently on them so the stems thicken up. You do not need hurricane force, just a gentle breeze.


b0nger