So i am helping a buddy do a herbie on his system never have done this before so i have some questions. He has dual overflows, i am going to run a 1.5" bulkhead with a strainer as the syphon line with the gate valve and the 1" on one side as emergency. But he has dual overflows should i have 2 emergency drains with one a little higher than the other or just plug off one of the 1.5 " hole as i am using the other 1" for the return pump. To tune then just open the gate valve all the way and close it till its quite? Drain above or below water line ? The emergency drains just below where water enters overflow or a ways down? Thanks
Should add going to be running a 2000 gph pump or so
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank