i talked to my friend this morning and he said that you can use "paint" for cement (it's something with Fe)
you make the polystyrene base and you cover it with cement (already colored cement)
you have some colors to chose from: red, yellow, black...
but IT IS NOT SAFE to put the fish in in...
well, you know that the water column has to be around 12-15 cm so the volume of the tank is not that important, its area is more important... you'll need something like 35 x 25 cm with a height about 20 cm (5 cm over the water level) that means about 17 liters
don't chose the female by the...
in the spawning period angels are very teritorial and it's kinda hard to keep any fish with them (when they are mature)
but till they grow up, you can try some big livebearers like xiphos
adding salt is a "trick" for killing some bacteria but it's not really the best advice i'd give for getting read of them...
usually you add salt for fist which live in .. grr i don't know the word... it's water that is neither salt neither fresh, somewhere between saltwater and freshwater (but...
i've seen some home made backgrounds to a friend of mine and they were "painted" and the fish were ok, i'll ask him what he used and i'll tell you asap
the last picture is the coolest :good: it looks like a chicken showing her babies how to eat? do you know that particular gesture?
and indeed, really clean picts