Help with plumbing please!

[Eder]

Finally plumbed our 265. Previous tank was plumbed with a bean animal but we didn’t want to drill the back of this one. I’m getting some gurgling and the drain on the left doesn’t seem to purge. I recognize it has a bit of a way to travel but I made sure to keep it in a downward slope and didn’t use any 90 degree elbows. Any suggestions would be very much appreciated.

I have used yellow arrows so you can see which drain I am talking about.

Thanks again!

 

[Eder]

 

[dugthefish]

Are those just Dursos and return lines? Did you consider running dual Herbies?

 

[Eder]

We did. However we didn’t want to drill the back of the tank at all. Thus we ended up with two returns and two dursos

 

[Snoopy 67]

You do not have to drill for a Herbie but you will have to come up the back & over the top.
I use 2 3/4" Sea swirls on mine.

 

[Eder]

You do not have to drill for a Herbie but you will have to come up the back & over the top.
I use 2 3/4" Sea swirls on mine.

Might be able to do this. We want to TRY to not had anything on the back in this tank. What about a single drain herbie....is that even a thing?

 

[WillH]

I use dual Durso setup without gurgling. I had gurgling at first but was able to get rid of it by increasing return pump speed.

 

[Eder]

I use dual Durso setup without gurgling. I had gurgling at first but was able to get rid of it by increasing return pump speed.

I tried that today to no avail. I have a DC pump so I hoped that would be it. Could you share more info on your setup? Maybe a picture?

For those who may ask. The drains are literally ½” under water.

 

[Eder]

Help!?!?

 

[Saveafish]

Here's an idea. Use one return. And the other 3 as a bean. Its the same just spread out wider.
The two drains won't keep up with inflow. Unless they are full syphon.
Lower the returns 2-4 " and take the 90's off and put 'T' s on them.

 

[Eder]

You’re onto something for sure. Was also thinking of adding valves and tuning a bit.

 

[Eder]

Bahhhh. I’m getting desperate. I would hate to change the entire design. Not understanding why one overflow is fine the other is like a hot tub in the sump. Thus the tank draining is totally weak!