Join Date: Jan 2013
Location: Humarock - Boston MA
I'm at work so i can grab pics when i get home, but since your in florida you'll most definitely have local salt water forums. They are best to to ask for drilling help, usually all forums have a local guy they pay for the drilling, and always very cheap like $20- as example for here in Boston. Overflow boxes are nice cause they hide the piping, skim the surface, and just use the box space to hide the outflow piping.
How far you drill down, and the size of the pipes will determine GPH flow rate, and sump size for the most part. There's a lot of sump calculators out there of you google sump calculator, and see what they tell you, and compare, but mainly it's all the same result, some taking in more factors then others into the equation.
I'm not into the image, but into the hobby...