Smallest overflow for cryptic fuge return

[Puggz]

Still tossing around the idea of a cryptic fuge which will consist of a small glass tank, reverse undergravel filter/flowpath and a small surface skimming overflow utilizing an emergency stand pipe to prevent accidental overflows. I really like the the Eshopp eclipse S for this but wondering about other options.

As the flow rate will be quite slow (IE low volume) i'm thinking that the entire system can be gravity fed. A tee off the DT with flow control and an overflow into the sump (with flow control). A taller type tank with room for rock/gravel and a few cryptic creatures.

I got a version of this from someone on R2R and I think its a great idea.

Thoughts?

 

[Subsea]

“A tee off the DT with flow control and an overflow into the sump (with flow control).“

Concept is fine. Like most things, the devil is in the details. So, what type of flow control in & out are you detailing?

 

[Puggz]

“A tee off the DT with flow control and an overflow into the sump (with flow control).“

Concept is fine. Like most things, the devil is in the details. So, what type of flow control in & out are you detailing?

I would think the best would be 2 gate valves as they give the best/finest control. I'd have to be careful with the substrate as it relying on gravity to push the water. Then again, a RUGF may add some extra complexity that isn't really needed. A simpler option would be to evenly distribute the incoming water a few inches off the bottom. Then I could use any type of substrate I wanted (or a combination). Nice thing is this will be external to the sump so I can play around with some ideas.