I paste here some written description of one of my riparium tanks where I have a few orchids going, 65 gallon with an open top. The original blog post is right here
. Here is a view of the whole tank...
Here is a view through the top of the tank, with numbering for certain plants of interest.
1. Spiranthes cernua var. odorata
This is a plant that I acquired some time ago. It seems to be doing well, with new leaf growth and healthy root development. Only the bottom 1/3 of the planter is below the water's surface. This is a wetland plant, but I decided to err on the side of giving the roots a somewhat more aerated environment. Water wicks up from the bottom of the planter, so the planter media is wet all of the time. I shot the picture below on the day that I acquired this plant. It is quite a bit larger now.
3. Phragmipedium 'St. Ouen' -
This orchid plant has struggled, but it is growing slowly. The picture below shows new root development inside of its planter. Most Phragmipedium
species grow in moist to wet habitats in nature, such as locations along waterfalls or mountain streams. However, I have found that this variety does not tolerate having its roots fully submerged in water. I originally situated this plant with most of its planter below water and as a consequence the roots began to rot. The media inside the planter is still quite wet, as water wicks from below, but I now have it hung such that only the bottom 1/2" of the planter is in the water.
8. Orontium aquaticum -
This is an extremely cool plant that I acquired at the end of the winter. I had to cut away about 75% of its extensive root system to fit it in its planter. The whole plant declined and I thought at first that it would perish. However, it is a hardy plant and it slowly recovered. It has grown several new sets of leaves and many new roots. The leaves have a wonderful velvety texture and the flowers have a strange, exotic look. I hope that it will bloom for me someday in the display.
10. Echinodorus cordifolius 'Tropica Marble Queen' -
What a gorgeous plant! I understand that in immersed culture the white variegation on the leaves of 'Tropica Marble Queen' is much more subdued. Here it is well-defined, even though the plant is only receiving moderate light inside of the display.