I took your advice and started 12/12 today.
With this I added my 3 softlight CFLs (14,20,23 watt) and 2-40 watt 3000 lumen 3000k T12s, 2-32 watt 2900 lumen 3000k T8s and 2-32 watt 2900 lumen 3500k T8s. By my math that is 17600 lumen with the tubes and an additional approx. 4000 lumen. Grand...