endparenthesis: I got these from applesnail.net owner, Stijn, and he grows them in regular tanks and recommends at least 16 gallon tank for them. I got really good instructions too.
First he recommends to hatch the eggs in a small tank (0.5-1.3G) and to use 50% distilled water and 50% bottled water. When the larvae reach the adult form, they are to be moved to the larger tank with 50% bottled/soft tap water and 50% distilled water, but only add water about 2 inches first. After the Triopses reach the adult form and get past the larvae stage, the biggest danger is over.
I added tap water two days ago and the Triopses are doing fine, they live in a 14 gallon tank now and are really active and molt every day. I feed them Wardley's Shrimp Pellets and New Life Spectrum pellets. Before they reached the adult form I gave them small amounts of powdered spirulina.
jhoetzl: Thanks. These sure are interesting creatures. I am tempted to put one in my shrimp tank, but I bet it would eat all the shrimps.
BoxxerBoyDrew: Go to Google and write buy Triops to the search field, you'll find lots of online stores that sell them. You will more likely find Triops longicaudatus
which is an American species and grows a bit smaller and prefers higher temperature than my European Triops cancriformis