siphon break

Evening, all. I'm fairly new to the salt reef game here. Been doing fresh tanks for about 20 years, but just established a 130 gallon salt tank. Problem I ran into was that the tank I got is JUST a little too thick in the back for a HOB overflow system, so I constructed a HOB DIY siphon with...

I'm struggling to figure out how to construct an anti-siphon device for my ATO line. My rough design is below. The issue involves the 1/2" ID (5/8" OD) silicone tubing that runs from my freshwater tank to my sump for ATO. Right now, when the ATO sensor is triggered, the pump turns on and fills...

I’m setting up my new tank with a fish room on the same level but separated by a wall. The best solution I could come up with for ATO was to run RO tubing up the wall, above the ceiling, down the tank wall, and into the sump. The Neptune ATK pump seemed powerful enough and it is! My problem is...

I already have a small hole drilled to my return nozzle in order to break the siphon when my pump is off. The problem is that the hole is to low from the water line causing more water then I want to drain into my sump. The question I have is if I make another small hole will there be any issues...