Like many of you, Iím toying with Walstadís low tech planted tank approach (Perhaps itís time for a low tech forum?).
Iíve placed a 10G in a corner location that receives direct south and west light, and the tank is just low enough below the window sill that the substrate is basically shaded. Iíve probably got about 8 total gallons when you factor out displacement from the filter pack sand (over potting soil) substrate and that fact that Iíve left two inches at the top to discourage suicides.
An Elite power head with small internal sponge moves the water around, and Iím injecting CO2 at the moment but will yank it when the plants are well established. Said plants are Ludwigia repens (covering the entire bottom for now, but I will probably cull the foreground and backfill with ground cover later) and Lemna minor and Salvinia natans up top.
In addition to strong sunlight most of the day, I have suspended an 18W twisted CF in a poultry breeder pendant about 6Ē over the water surface. Itís on about 12 hours/day and helps with dusk and dawn transitionsÖsort of.
I have seven tough guppies in this unheated tank that seem happy as clams thus far.
The photo below tells only part of the story, but I like it in an arty sort of way. Iím compiling a front view time lapse series to show the Ludwigia growth and will post when the first plant reaches the surface.
Iíd love to hear how others are doing with Ďnaturalí setups, especially if youíre using full sunlight. You want to talk about pearling!!!