There are bubbles coming down my drain to the skimmer...

[dannieboiz]

I Teed my drain into the mag 9 and noticed there are bubbles traveling down with the drain into the EV-180... will there be any issue with this? I have gate valves on both the Skimmer and the fuge drain. I've closed the Fuge side slightly with the skimmer side wide open but there will always be micro bubbles. If I close the drain too much I'll have an over flow since the drain can't handle 1200gph. (it's ok with both wide open)

 

[szwab]

so are you feeding the skimmer with water that is draining from your tank? If that is the case the bubbles may effect efficeincy a bit but not much. Any way to slow the flow going into the skimmer? I'm having a hard time visulazing with the description.
Is the flow like this drain from tank to both skimmer and fuge then to sump? or am I tiotally wrong and you have micro bubbles going from the skimmer into the sump that you are trying to stop? Sorry more questions than answers.

 

[Entropy]

I don't think it will be an issue. It sounds like you are in effect adding a venturi to the input of the skimmer. You may have to adjust the airflow to account for it, but it should work. It is almost impossible to eliminate bubbles from the drain pipe.

 

[dannieboiz]

Ok so here it is.

There's a gate valve on each end of the 3/4" drain. I can adjust the fuge drain side smaller and have absolutely no bubbles coming down on the skimmer drain side but then I'd end up with a puddle on my floor. but if the tiny bubbles doesn't do much to effect the skimming I'll leave it and see what happens.....

What about getting rid of the 9.5 and drain it straight into the EV-180? I have a mag 12 as the return will this be enough?

 

[szwab]

The ev-180 needs a pressure pump to supply it to make it work properly. so a gravity feed to it is not an option. I wouldn't restrict the water going to the pump as that could eventually cause premature failure. What happens if the mag 12 stops working is the drain the only source of water for the mag 9.5? If so you run the risk of burning that pump up if the drain should stop for whatever reason. But I could be totally out in left field on this one.
as said above air in the drain line is near impossible to get rid of.