I’ve currently got a tropical 60-litre bi-orb and I’m wondering about how many fish I can comfortably accommodate. Over the last months I’ve added 9 neon tetras, 2 red swordtails, 6 guppies and 2 dalmation mollies (and 3 plants which are growing nicely). No problems thus far except for a minor snail invasion I’ve managed to suppress. Is that as much as I should add? I was also thinking of adding a couple of triops in a month or so once I’ve grown them a bit in a separate tank.
