Rickvn
Aquarium Advice Apprentice
Hi all. I have had my skimmer working fine for the last 7 or so months (when I set up my first marine tank). Up until a few days ago it produced dark, dirty skimate as I expected it would. But the last few days it is completely clear. I cleaned the pump and cup (loath to clean the skimmer barrel as I understand it has to mature in order to work correctly) and it produces great bubbles. But just now in spite of the barrel being full of tiny bubbles the skimmate is totally clean and not flowing up the riser into the cup. Does that mean that there is a problem? The only thing I have changed recently is adding a phosphate reactor. Can this be the cause and is it a problem? Thanks.