Quick and basic bean animal question

[Mark917]

Starting my 40 breeder setup with Modular Marine overflow (1/2 inch plumbing). Have traditional bean animal setup and its working fine. Question is around open channel drain and depth of overflow lines in sump:
1- I currently have my open channel drain as a single piece of pipe just like the emergency drain. It is not drawing in air as I have the flow set up to where water is moving into it (use a ball valve on drain 1 unfortunately not a gate) slow enough not to. Is this setup OK OR should I move to what seems to be the standard setup for the second drain - a down turned 90 with a hole in the top (is the top hole necessary???)?
2- For the lines entering the sump (sump is in the basement using 4 elbows 10 feet down), should they be in the water or out of the water? Should there be holes drilled into them as well for sir release just above the normal sump water line?

Again its running fine now but I haven't run it through its bank of failure tests yet. Just want to be sure I start off right with the best chance for success!

Thanks.

 

[nereefpat]

a down turned 90 with a hole in the top (is the top hole necessary???)?

I believe the turned down 90 is to just keep stuff from falling in and to keep algae from growing in the pipe. If you do put the 90 on, you don't want a hole in the top of the primary drain. The secondary/trickle drain will need the hole with the tubing.

2- For the lines entering the sump (sump is in the basement using 4 elbows 10 feet down), should they be in the water or out of the water? Should there be holes drilled into them as well for sir release just above the normal sump water line?

The the primary and secondary/trickle lines need to enter under the water, but no more than about an inch. No holes. There should be no air in the primary/siphon and barely any bubbles in the secondary/trickle.

 

[Mark917]

Awesome and thanks. Do I need to run the secondary with downturned 90 in the overflow?

 

[nereefpat]

That would be best. The elbow with the hole and tubing allows the secondary to become a siphon if the primary would happen to become obstructed.

 

[Mark917]

Thanks again!!

 

[Mark917]

I've been told there are no stupid questions but this one may qualify: I assume the air line (the end not attached to the 90) has to NOT be in the water correct (some designs I see seem to have the other end of that line inside the overflow box).

 

[nereefpat]

It needs to be inside the overflow box.

The original design. Read here: https://beananimal.com/projects/silent-and-fail-safe-aquarium-overflow-system/