Originally Posted by Angelo russo
Can also be due to adding stress coat it drives the skimmers all out of wack I will never be using stress coat again everytime I add it my skimmer goes nuts for 3 days
+1 some water additives will cause excessive bubbles in your skimmer. Mine didn't skim well at all and that's when I realized my SG
was pretty low due to faulty hydrometer. Adjusted salinity and it pulls waste great. Just my observation but I know a skimmer won't work in freshwater so my theory was the closer to fresh water your water gets then the efficiency goes down as well. Refractometer was the single best purchase I ever made.