I'm looking to try another round at my 15g Aqueon column tank. Previous iteration was when I was fairly new into the hobby and let's just say it did not go well. This tank is a bit of a challenge to keep, especially with sand!
So the gameplan, make a bit of a pond/bog cutaway for either CPO or a single clarkii with the crayfish taking center stage at the bottom and the plant roots breaking up the space. Here comes stocking to help give an idea!
Aqueon 15g column (13.6" x 13.8" x 24.8")
Live Critter Stocking:
4 CPO or 1 clarkii cray or 1 red rust cray
Duckweed (small, not giant)
May try a rotala rotundifolia
Stock lighting AND
Marineland LED Strip (http://www.marineland.com/Products/aquarium-lighting/LED-Aquarium-Lighting/freshwater-aquarium-led-light.aspx)^ already have it
Up in the air. Leaning toward two double-inlet sponge filters (recent convert to the Church of Sponge)
The plan is to get something in here, ideally as a species only or lone inhabitant and in a way that can break up the large empty vertical space. I absolutely love crayfish and wanted to give one a proper and comfortable home. Rooted plants would be a great addition but the cray would likely devour them. Fish could draw the eyes away but the tank has poor horizontal space and when they sleep....well crays like to eat!
Floating plants! Give a great boggy looks and the roots will help break the empty space. Call me crazy but I am actually one of those weirdos who loves duckweed. Here is my question - substrate. Well a few questions.
Will a nutrient rich substrate provide anything to floating plants via degradation of the soil?
Or will they be sustained simply by the waste and bacteria provided by the cray and food?
Sand is absolutely out of the question, if a nutrient enriched soil is used, will the copper be an issue? I've read quite a few reviews about stray large diameter bits of copper being in the substrate mix.
Since I will be dosing calcium and iodine, would a basic small diameter gravel be fine?
If anyone can give me some help I'd be very grateful! The tank has been sitting for two weeks with just the driftwood setup taking space until I can get some substrate direction.