Indoor box height?

[Muddy]

Okay, here's what I would do. Take the height of your res, add 30" for the plants, then the space between the plants and the light, then add the space for the lights themselves. That should give you plenty of room to grow most dwarf auto strains as they usually don't get much over 24" tall in most cases.

no, it's 4 plants sharing a 10 gal dwc res. and i just upgraded to two 60w cfl's and two 75w cfls