68 Gallon Rimless Reef Build

[gregzz4]

Originally Posted by zhasan

or should I decrease it to prevent potential overflowing

Are you referring to baffle overflows, or total volume flooding ?

Depending on what your gph over the baffle will be, you potentially could go almost right to the trim
A 12" wide baffle can handle around 800gph and have a film of less than 1/2" of water

My baffles are almost 18" wide
I only left myself 1/4" from my highest baffle to the underside of the plastic trim
When my el-cheapo socks plugged up, the baffle still handled the flow from both my Eheim 1262 return pump (8-900gph), Compact 2000 (225gph) and 2 MJ600s through reactors