Return Siphon

[TheSheff]

Hello! I recently setup this tank but i’m having issues with the return siphoning. How could i prevent this from happening? I know some people drill holes but i’m not sure where i would need to drill.

 

[KrisReef]

Put the terminal end higher in the water.
I have drilled holes in the first or second knuckle from the glass and then rotate the piece so the hole is pointed parallel to the surface and the siphon will break when the water level drains to expose the hole.

With the end deep in the water the siphon could drain down until the end is exposed, so raise that end and be careful to not bump it lower.

 

[mfinn]

Put the terminal end higher in the water.
I have drilled holes in the first or second knuckle from the glass and then rotate the piece so the hole is pointed parallel to the surface and the siphon will break when the water level drains to expose the hole.

With the end deep in the water the siphon could drain down until the end is exposed, so raise that end and be careful to not bump it lower.

This ^^^^

 

[TheSheff]

Put the terminal end higher in the water.
I have drilled holes in the first or second knuckle from the glass and then rotate the piece so the hole is pointed parallel to the surface and the siphon will break when the water level drains to expose the hole.

With the end deep in the water the siphon could drain down until the end is exposed, so raise that end and be careful to not bump it lower.

by terminal do you just mean the end?

 

[mfinn]

by terminal do you just mean the end?

He did mean the end of the return nozzle. Putting it closer to the waters surface will reduce the amount of display that siphons back to the sump.
The siphon break hole also works.

 

[TheBear78]

If you're happy with the nozzle direction you could remove a few sections of the loc-line too.

 

[TheSheff]

He did mean the end of the return nozzle. Putting it closer to the waters surface will reduce the amount of display that siphons back to the sump.
The siphon break hole also works.

yeah i don’t think i should move the nozzle much further up bc when the tank is off the water drains to below it and when i turn it back on water goes everywhere. I guess i’ll try out the hole for now !

 

[Dburr1014]

Hello! I recently setup this tank but i’m having issues with the return siphoning. How could i prevent this from happening? I know some people drill holes but i’m not sure where i would need to drill.

That's a lot of lock line you got there.

 

[TheSheff]

That's a lot of lock line you got there.

thank you

 

[mfinn]

yeah i don’t think i should move the nozzle much further up bc when the tank is off the water drains to below it and when i turn it back on water goes everywhere. I guess i’ll try out the hole for now !

It's a balancing act trying to get the perfect spot. The higher you get it, the less water drains back to the sump. Put it too high and you can get a vortex that draws air down and creates bubbles everywhere. Plus it can splash everywhere when the pump is turned back on.
I use the flat loc-line nozzles in my tank. You can direct the water a little better than the round ones.
Get the end of the nozzle as high as you can but give the end a slight tilt downward may help the splashing.
I might also shorten the amount of loc-line too.
The siphon break holes do help, ( but depending on them to break the siphon can backfire ) but they need to be maintained. Algae will grow over the hole and close it. Snails can park on them at the worst time.

 

[TheSheff]

It's a balancing act trying to get the perfect spot. The higher you get it, the less water drains back to the sump. Put it too high and you can get a vortex that draws air down and creates bubbles everywhere. Plus it can splash everywhere when the pump is turned back on.
I use the flat loc-line nozzles in my tank. You can direct the water a little better than the round ones.
Get the end of the nozzle as high as you can but give the end a slight tilt downward may help the splashing.
I might also shorten the amount of loc-line too.
The siphon break holes do help, ( but depending on them to break the siphon can backfire ) but they need to be maintained. Algae will grow over the hole and close it. Snails can park on them at the worst time.

thanks for the advice! I’m just very hesitant to take the loc line off bc it’s so mf tight lol

 

[workhz]

Raise it. Doesn’t really matter whether it’s a foot deep in the water or 1/2” under water in terms of splashing on start up because it will all drain into the sump until siphon is broken. Keep it a 1/2” below with the nozzle pointed slightly down will prevent your sump from flooding.

you can certainly add a hole to break siphon but I wouldn’t rely on that.