Well done Motsy! Just keep dosing the tank as you have been until you are able to get your fish. Keep checking the water too, just to make sure it stays 0-0.
When you are abe to get the fish, test the water, if it is 0-0 do a BIG water change - at least 80%, and then go and buy your fish.
TROPICAL TANK-Elite Tank - 207litres
6 Harlequin Rasboras, 5 Emerald Eye Rasboras, 10 Cherry Barbs, 2 Bristlenose Plecs, 2 Panda Corys. 4 Dwarf Chain Loaches.
ViaAqua Tank AR620 97litres
1 red male betta, 1 BN