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Add a foam block to the skimmer intake. I don't like this option.
It would actually be added to the output, not the input. I do this on my Reef Dynamics skimmers to reduce micro bubbles, and turn them into macro bubbles...lol I then have a small acrylic sheet that walls off the output from the rest of the sump, so the micro bubbles have the opportunity to rise to the surface, instead of being sucked up by the return pump.
I think you're on the right track to resolving the bubbles. Keep us updated.
Thats a lot of flow in the DT. Will this be SPS?
I've got a lot sorted with my aquarium but i need some help / advice / solution to microbubbles.
I'm getting microbubbles in the display. I think the return is getting them from 3 sources within the sump.
1. Overflow
Water comes into the sump and creates a lot of bubbles. A small amount of water goes through 3 slits directly to the return section. I believe the slits are there to prevent the first section from filling too much.
2. Refugium
From the section that the water enters the sump, there are 3 slots that feed the Refugium. Microbubbles enter the fugue and go directly to the return that's located right behind the Refugium.
3. Skimmer
Skimmer produces microbubbles and they are carried to the return section.
I have a 110gal display with the eshopps R300 sump. Skimmer is SCA 302. Return pump is Pond master mag drive (1200gph) 3/4 inch return line / 1 inch drain line. No hard plumbing.
I attached a pic of the sump and how the water flows through it.
If any of you can help, please let me know how t to stop these microbubbles from getting to the display tank.
This is an eshopps R300 sump.
http://www.eshopps.com/products/filters/refugium/r300/
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Did you ever resolve this? I have the r300 and had to turn one of my return valves 1/4 turn, slowing the flow way down to keep Microbubbles out of my display. They weren’t coming from the skimmer, as I turned it off for an hour or so as a test. It seems the Microbubbles are coming from the overflow. Considering ditching this brand new Eshopps r300 for something with a better design if that would resolve the issue.Pretty sure, I can see them in the skimmer section. Also, it is better first thing in the morning when the lights first turn on and get worse throughout the day. If that info helps at all?
Did you ever resolve this? I have the r300 and had to turn one of my return valves 1/4 turn, slowing the flow way down to keep Microbubbles out of my display. They weren’t coming from the skimmer, as I turned it off for an hour or so as a test. It seems the Microbubbles are coming from the overflow. Considering ditching this brand new Eshopps r300 for something with a better design if that would resolve the issue.

