Hi . Glad to find this site. New here obviously but not new to hobby. Have had lotsa fish from koi to oscars but just starting on more sensative fish (gbr's) and have been enjoying all the info here already. tank is 120g tall and 30+ mixed tetras and 4 gbr's. No live live plants yet, cant get my head around them enough to keep them alive. Will be looking for advice on them as time goes bye. Thanks for having me!