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2 pertinate questions. How old is your sand bed, and when was last time you cleaned your return, skimmer, other pumps. And last time you cleaned your power heads... maybe 3 questions

- are they coming out of return or out of powerhead / stream?

 

- are they some of your microbubbles from the chiponator 5000 skimmer making their way into sump and over to return area?

 

- Leftover effect of clam spawn?

 

- sump water level lower than normal? Maybe return is sucking air

2 pertinate questions. How old is your sand bed, and when was last time you cleaned your return, skimmer, other pumps. And last time you cleaned your power heads... maybe 3 questions

My sand bed is 8+ years in this location where I added 100lbs of arragonite for a total of 15 yearsm including from the old and then size upgrade.

I do regular maint on all above.

sump level the same as always

DD skimmer flows to other side of sump where baffles

not from streams

appears to be return but could be on inflow to main pump

Toyed with clam idea but didn't see it and water tension is not like it happen. (clam has been acting)

 

ALL appears like SAT night except for microbubbles.

Are you sure it is air an not plankton? Clam spawn may have encouraged plankton explosion?

 

 

Take a water sample put it in a container, fill all the way up as far as you can, trying to keep any or all air out of the water sample. Let jar set for a hour or two. Tip jar on end slowly, if the water clouds again, it's not bubbles, if it does not inspect return and skimmer pump casing for leaks

sounds like something is sucking in air!

Don't miss a trick do you. :biggrin:

 

 

Are you sure it is air an not plankton? Clam spawn may have encouraged plankton explosion?

clearly bubbles

Chip,

 

I'm sure you have your suspicions of where the bubbles are originating... a connection that looks sealed but isn't perfectly sealed, pumps not letting bubbles rise to the surface with a little bit of bubbles getting in, etc..

 

Take one pump offline at a time, and see if it helps, starting of course with what you suspect most. For example, if you suspect that its your return, then get a mag 18, 24, etc, submerge it, and use that as a temporary return with some clear tubing (with no connectors to guarantee you don't introduce bubbles that way). If its an internal pump that could be pulling air down occasionally (after I clean my seio 2600's, even though they're a good 6" below the water surface on occasion that will still pull air down in a little vortex and spit bubbles everywhere that take quite a while to dissapate).

 

Good luck in locating the source!

Gang,

 

This is not a quiz or test to see who gets it correct.

I have not found the reason for the bubbles and would like too.

I think Chris (phisigs79) is on the right track though., :biggrin:

Did you recently air an airstone you forgot about? :lol:

 

Another though it to check your intakes and see if they're pulling air into the system I don't know if you're running closed loop or overflows

I used to have a ton of micro bubbles now I have much less but still some. One of my issues was my output from my main pump to the 210 would occasionally suck in air. it didn't happen much but when it did the cyclone like air would make tons of bubbles. I changed my output to the flare nozzle and put them slightly deeper in the water. that helped a bunch.

 

I think this could happen as easily from the output as from a powerhead.

(edited)

I'm almost willing to entertain crackpot ideas at this point.

 

Hello

 

 

Gremlin attack man, those nasty looking little green things, you know one of these 72gremlin.jpg Durrr...

 

 

Have you tried the shutting down of individual power heads/pumps idea for a extended period of time?

Edited by jason the filter freak

I'm almost willing to entertain crackpot ideas at this point.

 

Hello

 

 

Do you have siphon breaks in any of your piping? I had one that I didn't get quite below the water line and it would suck in air and voila microbubbles.

Gremlin attack man, thost nasty looking little green things, you know one of these 72gremlin.jpg Durrr...

Have you tried the shutting down of individual power heads/pumps idea for a extended period of time?

 

I said I was ALMOST READY to entertain crack pot ideas. :wink:

 

It has to be a return issue and I now see a canidate in one of the runs with fresh creep after the pump.

I was hoping to take my pump off line as a last resort but think I will anyway after the rains come later today and replace that run.

That said, I'm also reluctant to do a lot of plumbing because the sump upgrade will become available after this afternoons planting is done. I've had all my pond plants in it for the last 2 weeks when the my winterover ran out of time. Not a bad way to test if it leaks although.

I don't use siphon breaks because I can add 10g to the sump at all times.

Did you recently air an airstone you forgot about? :lol:

maybe his airstone came out of his skimmer

:biggrin:

It has to be a return issue and I now see a canidate in one of the runs with fresh creep after the pump.

 

That is how I found my microbubble source recently. It was really hard to tell where they were coming from because once they get in the system they get sucked through everything, right? I couldn't figure out if they were coming from my CL or return, and if the return was it the plumbing, turbulence in the sump, skimmer . . ., etc.? Well, you obviously know the drill. I finally noticed some salt creep on the outflow of my return pump just below the threaded fitting on the union valve and thought, hmm. If something (salty water vapor) is making out, might it be possible that something (air) is also being sucked in? Made some adjustments and applied a generous helping of silicone and no more microbubbles. Turned out to be a much easier fix that any of the other options I was considering.

 

Hope your problem turns out to be as easy to solve.

  • 2 months later...
sounds like something is sucking in air!

ning ning ning ning.

You guessed the right thing. After trying several different things, I found the problem.

I had a power off test in preperation of my new sump a while I was cleaning and maintaining my Iwaki 100.

Everything took about an hour to do and as I was taking the measurements, I noticed a slight puddle at the union of my existing sump to pump. This particular joint is as much as 15 years old and includes some 1" tigerflex PVC and a union. The drip was there and a quick dab of SGG sealed it up and no move bubbles.

While it was pumping, it was pulling the water so no leak was evident. When it was off and had presure on it,

it allowed the water to seep out.

Thanks, Chris and everyone else, including Jason and his crack pot ideas.

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