I bought and set up an older 100g acrylic tank before I knew much about setting up overflows in reef tanks. The tank has a single vertical overflow in the rear corner with an outlet that goes through the bottom of the tank. I’ve set up a hybrid Durso system (see pic) to help reduce the noise, but it is far from silent...and still too loud for our living space. I would also like to resolve the risk of a major flooding incident if that one output become obstructed.
The tank is in place and I have no reasonable way to move it, so after much deliberation and research, I have a plan. My plan is to drill a hole in the side or the overflow about 10” up from the bottom, place a 1” bulkhead with the threads on the outside of the tank. I will then remove the hybrid Durso and connect a gate valve to the output under the tank. I’ll then use a 90 degree street elbow to the bulkhead inside of the overflow and connect a Durso to it. (See my awful drawing).
Fortunately the side corner that I will be drilling, placing the bulkhead, and having a drain hose go around and into the stand, is on the side of the tank away from entranceway to the room so it won’t be a total eyesore for me.
Is this a reasonable plan? I can drain the overflow and plus the bottom outlet while drilling so I can avoid any plastic dust get into the tank during the drilling. Is there anything important that I am not taking into consideration? Thank you much!
![4D8DB62A-3F70-4B69-B968-E903E3DA2B4A.jpeg 4D8DB62A-3F70-4B69-B968-E903E3DA2B4A.jpeg](https://test.reef2reef.com/data/attachments/1969/1969732-69d9c301104ab910d7a51c87c47aaf85.jpg)
The tank is in place and I have no reasonable way to move it, so after much deliberation and research, I have a plan. My plan is to drill a hole in the side or the overflow about 10” up from the bottom, place a 1” bulkhead with the threads on the outside of the tank. I will then remove the hybrid Durso and connect a gate valve to the output under the tank. I’ll then use a 90 degree street elbow to the bulkhead inside of the overflow and connect a Durso to it. (See my awful drawing).
Fortunately the side corner that I will be drilling, placing the bulkhead, and having a drain hose go around and into the stand, is on the side of the tank away from entranceway to the room so it won’t be a total eyesore for me.
Is this a reasonable plan? I can drain the overflow and plus the bottom outlet while drilling so I can avoid any plastic dust get into the tank during the drilling. Is there anything important that I am not taking into consideration? Thank you much!
![27B49327-1922-43E8-BC10-A090230306D1.jpeg 27B49327-1922-43E8-BC10-A090230306D1.jpeg](https://test.reef2reef.com/data/attachments/1969/1969671-da3381fa9ce9e3a16a0f9a705209964d.jpg)
![C92B1466-0029-4699-ADCC-C4E49E2798EE.jpeg C92B1466-0029-4699-ADCC-C4E49E2798EE.jpeg](https://test.reef2reef.com/data/attachments/1969/1969672-bd89162a4351c987a496ad3a04982210.jpg)
![4D8DB62A-3F70-4B69-B968-E903E3DA2B4A.jpeg 4D8DB62A-3F70-4B69-B968-E903E3DA2B4A.jpeg](https://test.reef2reef.com/data/attachments/1969/1969732-69d9c301104ab910d7a51c87c47aaf85.jpg)