GSMguy
New member
<a href=showthread.php?s=&postid=9962369#post9962369 target=_blank>Originally posted</a> by heuerfan
Used an amiracle overflow box rated for 600 gph with mag5 return, no problems. Just have to clean utube if it gets a lot of algae buildup.
Currently using a lifereef overflow box rated for 700 gph with eheim 1250. I was using 1/2 vinly tubing with the eheim 1250, with this setup i was getting bubbles trapped in the u-tube. Somone suggested i used a larger vinyl tubing, so i changed it to 5/8 and no more bubbles accumilating.
If you happen to lose siphon on the overflow box, all the water from the sump will be pumped to your tank and disaster will happen. BUT if you make sure that your tank can handle all the water from your sump then you will never have a problem. My return pump section is about 5 gallons and i have my lifereef overflow box set at its lowest point allowing room for more water in the tank with out flooding.
Drilling is the best option but i did not like the look of the big overflow in the tank, and don't have the money to have a tank built with external overflows yet
Good luck.
also you can baffle off the sump so that only the section the pump is in will drain the rest will stay in until siphon resumes.
