New Tank

Hi,

A really good friend of mine is giving up fishkeeping and has offered
to pass on his 120 litre (30 US Gal / 25 Imp Gal) tank. I've been
wondering what to put into it. These are my ideas:

(1) Small tiger barb community: 8 tiger barbs, 4 swordtails, 1
red-finned shark (or, as a variation on this could have 10 smaller
barbs (say pentazona's or cherry barbs), 5 swordtails and 1 red-finned
shark.)
(2) Freshwater planted Angel tank - say 6 fish
(3) Peaceful community tank: Guppy's, neons, platys, corys

Any comments, ideas, suggestions would be great.

Thanks

Muddy.


(PS: My water is pretty hard here, so I'm not sure if I can keep
angels - I would always go for tank bred stock rather than wild caught
fish because I know they're more tolerant, but my pH tends to sit
around 8.0 which really is quite high for fish like this and I would
like whatever fish I keep to be thriving rather than surviving. I do
love angels though. I've always wanted a species tank.)