Hi all, I have a question I have a longtime fertilizer for the gravel, the brand Aquaflora the question is do I need a liquid fertilizer too ? with every partial water changes. /regards Hans Sandén Hans Sandén Rynnings väg 24 S-360 42 Braĺs SWEDEN E-Mail hans.sanden at vaxjo_mail.telia.com Hamcall : SM7TKL Discus owner