Hey folks I just spoke to one of you regarding microbubbles on our skimmers. This wasn't something I have heard of before so I wanted to investigate.
We typically run into a few causes of micro bubbles:
Brand new skimmer - Not yet broken in
Too deep of water - Tuned incorrectly due to the skimmer being in water too deep
Incorrectly tuned in general
Medications or supplements - many items people dose changes the surface tension of the water and make bubbles stick around longer than usual. Usually this also makes a skimmer go crazy and overflow but not always. Cyano meds, clarifiers, bacterial supplements and many other items are notorious for causing this. One of the beauties of a DC pump when this happens is you can simply slow the pump down until the cause is resolved. By doing so you don't have to completely de-tune a skimmer when you change a filter sock and forget to rinse it (as an example, because this can make your skimmer go crazy).
Maybe these tuning steps will help one of you or others to get your skimmer working well:
1: With the pump at 100% and the wedge pipe arrow to arrow (wide open) slowly close the air valve.
2: While slowly closing the air valve, keep a close watch on the level of the foam and bubbles in the skimmer body.
3: Make very tiny changes (open and close) until you get the absolute peak height of the bubbles in your skimmer body.
4: Next, very slowly turn the wedge pipe valve (black knob) either direction.
5: When the bubbles start to reach the bottom of the collection cup, stop.
6: Wait 60 seconds and then make minor adjustments to keep the bubbles near the bottom of the collection cup.
7: After 10-15 minutes, you should start to see larger possibly brown bubbles forming at the top of the bubble column / foam head.
8: After 1-2 hours, the bubble column should rise and you should have a foam head that is at or near the top of the collection cup where you will start to collect skimmate.
As always don't hesitate to reach out to us! We have live chat during business hours, as well as phone and email support!