Thank to both of you for your advise and welcome, I have had my water checked at my local pet shop and they say everything is fine and fish can be introduced, I went ahead and bought 10 Cardinals (small) and a pair of Pearl Gourami's. The Cardinals are shoaling and within half an hour the gouramis were eating bloodworm from my hand, wether this was because they were hungry, I don't know. None of the fish lost any colour and the male gourami has started to check out my floating plants.
I would like advise on DIY CO2
, this is something not heard of when I last kept fish and KH
are alien to me. All help would be really appreciated.