[seralt06]

hi everyone...i am building a refugium for my 150g reef, i just do not know what size overflow to go with along with a pump. my tank is not drilled..
thanks

[wordflo]

I would go with 1200gph or higher for overflow rate. Best of luck - are you also adding a sump too while you building refugium - (2 for 1 - lol)

[WhatReef]

i run a 1750gph pump on my 180g thats connected to my 65gallon sump/refugium and i run a line of the main pump to keep flow going to through the refugium part of the sump because it energy efficent that wat but i wish i went with a like bigger of a pump but it still does a good job.

[WILLIAM1]

If your building an overflow inside the tank, like a corner overflow than the amount of water going to the sump will vary.

If you keep your water level high in the tank than you will have a greater flow rate and less water less flow rate. you could easily use a mag 15...