Need advice from closed loop pro's
A SMALL STORY
I'm new to this forum but had marine tanks a few years back and just caught the bug again so i just purchased a 70 gallon marine tank [ 36L X 24W X 18H i love this footprint] plug and play.(Live rock,sand,4 clowns,wrasse,crabs..
Anyway all of this is transfered into a holding tank i had already while i drill the main tank in question.
I seen a few closed loop tanks and i'm looking for suggestion of where to drill all holes or just for CLOSED LOOP .
I am only going to drill the backplate only, both sides are visible for viewing.
[this could be changed }To start off for overflow box i will drill a 2 1/2 inch hole in centre of tank [drain to sump], 2 returns[ from sump] will be 1 1/2 inch top left, right corners.
THIS IS WHERE I NEED HELP
CLOSED LOOP SYSTEM Now i have 3 more bulkhead fitting's for 1 1/2 hole 1 for drain and 2 for returns. NO PUMP PURCHASED YET
The rear plate is 18inch high and 36 inch long
Pic's would be great if possible.
Thanks in advance for all suggestions.