Micro Bubbles in Display

[SCH14]

Hey everyone,
Does anyone have any ideas on what could be causing micro bubbles from the return?
310g tank, Vectra l2 pump running at 25%.
Gets worse with skimmer on, however currently no skimmer just running UV and GFO into the back chamber where they have 2 chambers to go through to get to return so it’s not from that.

Videos attached

 

[mues]

I can't really tell from the videos, but your return nozzles look like they are right at the water line?

I ran into an issue where my returns were pulling air and shooting it into my display. I drilled holes for siphon break and those were creating little tornadoes. Pointing the returns further down stopped this for me

 

[SCH14]

I can't really tell from the videos, but your return nozzles look like they are right at the water line?

I ran into an issue where my returns were pulling air and shooting it into my display. I drilled holes for siphon break and those were creating little tornadoes. Pointing the returns further down stopped this for me

I have tried everything with the return. Pointed them straight down, medium, high. Same bubbles

 

[exnisstech]

Can't help with the bubble but suggest maybe uploading the video to youtube and pasting the link here. Your videos have to be downloaded to view them and many folks will not do that. Just a suggestion

 

[Uncle99]

Use any two-part epoxy recently?
Super micro bubble maker for 48hrs.

 

[SCH14]

Use any two-part epoxy recently?
Super micro bubble maker for 48hrs.

I have not. All rocks were custom made and glued with a powder cement and and thin liquid glue. I’ve noticed bubbles come from the rocks often but from the return a lot more

 

[Uncle99]

I have not. All rocks were custom made and glued with a powder cement and and thin liquid glue. I’ve noticed bubbles come from the rocks often but from the return a lot more

I can’t see any video.
Perhaps the rockwork is still curing?
How long running wet?

 

[SCH14]

I can’t see any video.
Perhaps the rockwork is still curing?
How long running wet?

8 months

 

[Uncle99]

8 months

That’s mature.
I can get micro-bubbles in the DT from the return when the pump is sucking some air.
Could the pump be doing that. Don’t take much.
I can’t see any video so just guessing.

 

[SCH14]

Here is a better video

That’s mature.
I can get micro-bubbles in the DT from the return when the pump is sucking some air.
Could the pump be doing that. Don’t take much.
I can’t see any video so just guessing.

 

[Uncle99]

Honestly, I don’t see any micro bubbles in your water, I see a bubble here and there, is that what you mean?

Air bubbles in return are either created in the sump and getting to sump return pump, and coming out of return, or theirs a minute air leak in a fitting.

Too me, micro bubbles are tiny and tons of them.

Maybe I just can’t see them in the vid….?

Check that they are not escaping the skimmer.

 

[vetteguy53081]

Here is a better video

While its very minimal, the water level above your pumps are just above them. Raise water level by reducing the amount of water coming down to sump slightly. Other culprit is often the skimmer unit

 

[SCH14]

While its very minimal, the water level above your pumps are just above them. Raise water level by reducing the amount of water coming down to sump slightly. Other culprit is often the skimmer unit

Skimmer isnt on. think the water should be more than 9-1/2 inches? The video isnt great put its microbubbles on each return. Im at a loss as ive had a few people look at the tank and we cant figure it out

 

[vetteguy53081]

Skimmer isnt on. think the water should be more than 9-1/2 inches? The video isnt great put its microbubbles on each return. Im at a loss as ive had a few people look at the tank and we cant figure it out

8-9" typical but I also assure there is at least 5: above my return pump to minimize any air getting sucked in

 

[SCH14]

8-9" typical but I also assure there is at least 5: above my return pump to minimize any air getting sucked in

Ill give that a try but have doubts. Ive gone up to 11" before and nothing. Worth a shot