multiple HOB overflow boxes

[nachocheese]

I have 3 eshopps pf300 overflow boxes that i want to use for a 200g tank. is there any problems running 3 at the same time? if i increase the size of the bulkheads on the drains from 1" to 1.25" will i get more GPH than the 300 thats its rated at?





Model Number Dimension (L x W x H)
PF-300 6" x 3.25" x 10" up to 75g tank
max flowrate 300gph