I bought a model brian with eyeballs made and displayed in a 1.5 aquariam. I painted and glued the brian and glued the whole thing to the bottom of the aquariam. I did not put the filter in, just the air hose so it will gave bubbles. After a week there is this white fuzzy substance on the brian and eyeballs. The water is giving off an odd sweet smell. Can someone tell me what this substance is and how to get rid of it? Don't ask why I have a brian in an aquariam.