Assertion: aquarium's tank | /r/Desires | more gravel than tanks
Facets:
value: generally
type: DEGREE
Source sentences:
text: Often owners of UG Filters will add more gravel thinking more is better, while it is true that tanks with Under Gravel filters generally need more gravel than tanks without (2-3 vs. 1.5 -3 of gravel), adding copious amounts of gravel simply leads to what is called channeling and this results in dead areas and often more problems with DOC.