The tank is black lava rock for substrate, has a chunk of driftwood some tubes, that's all. I have a sponge filter, and a canister. The canister has just bio media and also bags of crushed coral to keep pH high.
Parameters are pH 8.2, KH 5, gh 8, temp 82
Just keeping them in there, I started with one berried female last feb, and now I have hundreds.
How about TDS? I really like those shrimp, and they seem to be one of the few I could keep by mixing my rock hard well and RO/DI water.
Rob, I've made some changes recently and am going to abandon the cardinals for the time being and just concentrate on the bee line. Let me know if you want them I'll sell or trade them to you for something too cheap to mention. I've got a couple yellow rabbits to go with if you decide you want to give them a go.