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- 1 year
Above is a miniature version of the Walstad Method Shrimp Bowl. The shrimp, plants, and the soil mixture provide everything for each other. Shrimp having very low bio load allows you to keep them in such a small amount of water volumn.
It has everything that shrimp needs. Plants, driftwood, moss, and almond leaf. I'll be keeping it at a east or west facing window to promote plant growth. The plants are dwarf sag, anacharis, baby tears, java fern, mini marimo moss ball, crypt wendii, and duckweed.
Soil substrate is 3/4" of sifted all organic no fertilizer top soil mixed with some natural red clay for iron and a small handful of crushed seashells for minerals, capped with 3/4" of rinsed pool filtration sand. But, I added a single layer of filter floss between the sand and the soil, to keep the soil from being mixed with the sand. The single layer won't keep oxygen getting reached to the bottom and still allow the plants' roots to reach into the soil.
The shrimp in there are cherry shrimp culls which I feed every other day. In traditional Walstad method you don't add any bacterial supplements and have no need for conditioners, but I still added a bit of Stability and will be dosing Amquil Plus every day for the first few weeks.
It's a great alternative from those desktop aquariums and better than just some plants in a vase of water. No water changes necessary, other than top offs.