hello everyone just wanted to say that im brand new to salt water and i love it already. I have a 40 gal hex tank and i have 3 big beautiful pieces of live rock in my display tank. With a custom made refugium filtration system full of live rock frags. I dont have any fish right now cause i want to get everything perfect. I also got a protein skimmer just to see how it worked and i hooked it up last night and it worked beautifully it was foaming up and working how it should. Today i went to unplug it and i noticed that it has stopped foaming and is still making bubbles but nothing like yesterday anyone know what happened or have any suggestions?