Hello from Singapore, Sorry I don't speak German so I'm using Google Translate for everything. I apologise if this thread is created in the wrong section of the forum. I started keeping Caridina Dennerlis about 4months ago in a tank with lava rock substrate (inert) and remineralising RODI water to 140 TDS/218 microsiemens with Salty Shrimp's Sulawesi Mineral 8.5. I started out with 20 dennerlis and now have about 70-80. The tank is filtered with sponge filters and an Eheim 2211 canister filter f…