Substrate Laying Photos Crater shape of washed Propagation sand for aquatic mix to sit inside. (10cm up the sides 2cm in the middle) Propagation sand is now underneath and around the edges Sprinkling the propagation sand over the Aquatic mix so it is completely sandwiched in. Rubbish bag was layed flat on the substrate to help avoid dust cloud when filling the tank with the hose on “Shower mode” Tank slowly getting fuller Tank almost full. Notice it is almost clear water.