^that's debatable, mostly people use 24/0 or 18/6 (lighton/lightoff) for veg stage. To answer your query, go for the biggest wattage you can afford....in local stores get the 42 watter if your budget allows. Or if it doesn't home improvement stores have four packs of 26wtrs for about 8-10 smackers.

:jointsmile: Bree