I've got a 10g that I've got some RCS, Amano's, and some Platy Fry growing out in. Eventually the Amanos will go into bigger tanks as will the Platys. This tank has mostly a mix of black gravel, Eco complete, and some red Flourite that somehow got mixed in. There's only an inch and a half or two inches of substrate, but plants are growing well. I'm growing out some crypt's, Java Fern, microswords, and a ton of Java Moss. My 20g has several hundred RCS, but it has red Flourite which really messes up the ability to view them. I want to empty out all the RCS from this tank and put them into the 10g. Then use organic topsoil with a gravel cap in the 20g and use it for OEBT's. The tank has alot of large Java Ferns, half the tank is Java moss. Would this help with the viewing of both shrimps?? Or should I leave the red Flourite in the tank and just remove the RCS and add the OEBT's? Also do I need to add more substrate to the 10g??