max overflow rate

[ken 429]

can anyone tell me the max flow of my overflow box ? The siphon tubes are 1 1/8" i.d. and the drains from external box are also 1 1/8". could you also recomend a pump size at 5 feet of head.tank size is 265 gal.

 

[Dr Joe]

approximately ~ 500gph give or take a little..

2x = https://www.marinedepot.com/ps_ViewItem~idProduct~DN1129.html

or

https://www.marinedepot.com/ps_ViewItem~idProduct~DN1127~tab~1.html

and maybe shunt back a little.

Dr Joe

.

 

[ken 429]

thanx for your help! so that i understand you correctly if i have 2 siphons and 2 drains i will have approx. 1000 gph?again thanx for your help!