The natural iron filings in our soil- what I 'sandwiched' a thin layer of in the substrate. I have not added any iron supplements to the tank at all.:
Quad Nova Extreme strips with (currently) two 39w 10,000k and two 39w 6500's.
I will be putting one 6500k in place of one of the 10,000k.
Cobalt mj1200 Powerhead fitted into a 8x6x4 pond sponge. Upside down for easy sponge removal- diffuser aimed up (along the back wall) toward the surface for surface flow without surface breaking.
Marineland 600 facing the opposite direction -diy filter attached.
DIY CO2 with the airline into the filter intake under the sponge- gets impeller chopped. 3-4 hrs per day.
10lbs fine lava rock 5 lbs River sand+tiny pebbles from our alpine meadow river (rated 99% drinkable water).
40 lbs Eco-Complete
15lbs Dark Flourite.
About 6 Pantyhose kneehighs filled with:
Eheim Substrat Pro,
small lava gravel
Expanded Clay Balls*
'Stuffed' kneehighs arranged on the bottom of the tank to build up the hill the castle is on, also some partly filled to help hold down the wood. This will hopefully help aerate the bottom strata of substrate since it will be deep in spots, This also is doing a good job stabilizing the hill.
Rocks from our river area.
Locally collected dry mesquite and manzanita.
Flourish Excel and Flourish Trace plus some crappy offbrand plantfood that came with an order. I'll use that up then switch to Flourish.
Assorted variety of fast growth starter stem plants.
Some Milfoil/Myriophyllum type from our river. New growth on that is extraordinarily fast - bright green and fluffy.
HC Cuba (Net over pantyhose bag of Eco-Complete- as seen in pics).
Riccia netted to rocks/wood.
Couple of Swords (Rubra and common)
Bucephalandra trailing down the hill and climbing up a bit into the 'trees'. (ordered 'Kir Adonis' this week)
Various tiny mosses on Castle battlements, walls, wood and rocks. A few tiny braided moss 'vines' wrapping the trees and up the walls - and hanging from the branches. Blepharostoma trichophyllum (mini rose moss, Fissidens to attach to the roof and peaks to make a thatch roof.)
3 Pogostemon helferi. Far right mid-ground.
2 Ludwigia Sunset or Alternatheria r.. Alternatheria seems to have such large leaves, still undecided- want something very magenta.
3 Limnophila sessiliflora
1 Red Lotus
5 Congo Tetra
Pair German or Electric Blue Rams
6 Pseudomogil Gertrudae - Gold variety (2 males/4 females)
5 (more) Neon Tetra (or Cardinals- depending)
5 Dwarf Corydoras
Possibly some shrimp.
*About expanded clay balls: http://en.wikipedia.org/wiki/Expanded_clay_aggregate