I know … I know … “Marine Aquarists Association …” However; I inherited a disgusting 15 gal. Eclipse fresh water setup with under-gravel filter and 4 inches of gravel as substrate. Previous owner did not run any mechanical, chemical, or biological filtration and I got that all up and running again. I’m cleaning it up and am wondering yea or nay on the under-gravel filtration. The Tubes are encrusted in disgusting, gross junk and it would be easier to just pull them out. Under Gravel important?



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. Then I'm probably going to convert it to a quarantine tank or add it to my 90 gal as a fuge. I wouldn’t keep the UG filtration if I were going marine.
