240g with Microbubbles

[Red Sea Purple Tang]

I decided to not use a filter sock on the inbound water lines. They're marked with an "X" in the pic.

The return pump is pumping around 1000 gph (head pressure taken off). The inbound lines are both 1". The one on the top is bringing in more water. The top line is emptying to a 4" "T" and the bottom on is emptying to a 3" "T". As you can see, I'm still having a problem with microbubles.

My thought is to go from 1" to 4" PVC right at the red "X's".

Any thoughts?

 

[BigReef]

Have you tried raising the water level in the sump so that the the air bubbles have to exit the top of the 4 inch tubes?

 

[Red Sea Purple Tang]

Thanks for the tip BigReef. I lowered the "T" so that the top was about 0.5" from the water line and the water just went over the top along with the bubbles. So I lowered it back to the water line and added two 90 degree elbows, to no avail.

Here's a VIDEO CLIP with the current mods. So you can see the amount of water coming through.

 

[Red Sea Purple Tang]

Well, I had an epiphany while waiting for my son to get out of school.

Some twins went by and I thought ... ... why not split that one inbound water line into 2! That way I wouldn't have to use a 4" $9 "T", but probably get away with a couple 2" "T's".

Of course, this may be an ill attempt, but seeing as I'm on Plan G of the Microbubbles, I try anything.

 

[Gooli]

I find microbubbles as annoying as you do and struggled with this for a long time. Whatever i tried to do, there would always be micro bubbles. I finally resolved the problem with 1) lower flow through the sump and 2) filter sock.

Where is the return sump in relation to the sump drains and are there any baffles or cheato or anything else between the drains and the return pump?

 

[VikeBron]

Try closing the ball valve a little on the downflow side. I closed them about a quarter of the way on mine and almost eliminated the bubbles. Of course you will have to watch the level inside your overflows to make sure it still throws down the water.