| | What is that earthy smell?
I just replanted one of my petite anubias nana that got away in my ten gal tank. When I distributed the gravel and removed my hand from the tank I got a whiff of this earthy aroma similar to the topsoil in my vegetable garden. I was not annoyed by it but it did smell familiar. Now I've noticed this many times before but now I'm curious enough to ask about it.
My 10 gal tank is my best planted tank. I used Seachem's flourite gravel and have a homemade bubbler to introduce CO2 into the tank (it is the biological variety). Every few days I dose with flourish excel. I do not test CO2 levels even though I probably should.
My plants consist of dwarf sag, a variety of crypts and anubias, and some java ferns. There is a high density of plants in the tank. The crypts and sag are propagating through runners. The anubias are a deep green and much larger than when I introduced them. About 1 year ago I put 5 petite anubias in the tank and they've multiplied to about 15 plants of similar size. I typically wait for them to naturally separate and replant the newbies.
The tank is populated with 1 dwarf cory, 1 tiger barb (a rescue from a friend's tank - it was going to be flushed as it was terrorizing other inhabitants), 3 female endlers (the rest of the colony is in another tank - I just couldn't catch these three), 1 dwarf african frogs, 1 otto cat, about 10 amano shrimp and 100's of malaysian trumpet snails. I feed a regular diet of mysis shrimp and blood worms. I feed a little more than I normally would because I want to make sure the frogs get to eat.
I don't usually see excess food but the tank is well planted so I'm not sure their isn't any. The amano shrimp seem to be doing their job because I do not have an algae problem and I hope the MT snails are doing theirs also. Once in awhile I use a turkey baster to clean the gravel.
I'm not bothered by the earthy aroma. I kinda think it is a natural by-product of the sediment that is forming in the tank. Is this normal??? Is this OK????