Yes i know, my filter for my 29g is cycled, and the tank is running right now, so i can just use that, and replace the substrate. But with the 140g, i need fine black sand, and that might be difficult to get, in Denmark. I'm gonna ask around and se if anyone can get Palmas palmas, delhezi, polli, or maybe retropinnis, and if anyone can get those shipped in, im probaly gonna get one of them. I really like the Palmas, so preferably a palmas, so Buttikoefri is also a possibility, i just really like the Palmas Palmas.