How big can I go while keeping the same light?

[OCDP]

Wow 13 fish eh.. interesting.

The fish I have now are , 2 true percs, 1 yellow watchman (which i plan to get rid of soon.. but im not sure because I dont think I am doing BB after all that I realized I would probably miss sand too much... and I do find it looks somewhat un-natural to some degree.. so sand stays, oh well.. I'll stay on top of cleaning it.

Anywhoo.. 2 true percs, 1 yellow watchman, 1 lawnmower blenny, and the flame (being the biggest by far in the tank) You barely ever see the YWG and lawnmower. Now that I think about it.. I may remove the blenny instead.. I never see the little guy! Like... hardly ever, once a week or so...