I never kept marines for that very reason Fred. Mind you, what I pay for water is criminal. I have to use RO water on my 2500ltr system for my Discus, with 80% water changes every 3rd day. If I do this when I get to Phils seeing we have our own water supply, I can waste as much water as I like with no heating costs lol.
I'd love to see your setup once you're done![]()