Single siphon drain with high level shutoff on pump. Thoughts?

[dtruitt]

I hate our durso return so much. Its unconscienably loud and not very safe.

Thinking about installing a gate valve and pulling the durso bit to turn it into a single siphon drainpipe.

If I put a level switch on the DT that kills power to the return pump, I will have a quieter drain system that is safer than my current system.

I'm curious to know, if the level gets high overnight or while I'm at work, will I need to worry about decimating our chaeto and other critters in the fuge?

 

[lapin]

I would not worry so much about the fuge, as I would the main tank with reduced flow , no heat ect...from not having the return pump on.
As you have found out a duriso drain is not silent. It will never be quiet. People have come up with better drains that offer protection against tank overflow. Maybe a herbie can be fitted to your tank?

Overflow Boxes and Drain Styles - Durso, Herbie, and Bean Animal

Decide which of the three most common types of drains and overflow boxes is right for you and your tank.

blog.marinedepot.com

 

[dtruitt]

I would not worry so much about the fuge, as I would the main tank with reduced flow , no heat ect...from not having the return pump on.
As you have found out a duriso drain is not silent. It will never be quiet. People have come up with better drains that offer protection against tank overflow. Maybe a herbie can be fitted to your tank?

Overflow Boxes and Drain Styles - Durso, Herbie, and Bean Animal

Decide which of the three most common types of drains and overflow boxes is right for you and your tank.

blog.marinedepot.com

The MP 40 in the DT should account for flow and gas exchange.

I've thought about doing a Herbie, I doubt its viable to make those plumbing changes for a number of reasons. Very little space to work with in this system... maybe a pseudo Herbie where both drains are teed together. Gate valve on the main drain and leave the dry emergency drain unrestricted.