thanks Sean, any idea on whether a bristlenose plec would be suitable to add? I've read it would be, but I also read other things would be which you guys have said isnt! So I'd rather take the advice from the knowledge on hereThat is perfect for corys. It is unsuitable for guppies or other livebearers though. The good news is many of the South American and Asian species thrive in soft water. Examples are most tetras, danios, rasbora etc.
If you see a species you think you may be interested in you can read up on its requirements at seriouslyfish.com, which will also tell you about temperement and other useful information. Hardness on the site is sometimes expressed a dGH (german degrees). 60ppm translates to about 3.4 dGH. Also 60ppm = 60mg/L