I havent seen the new test chart phishy but I hav posted elsewhere a photo of the old charts if that helps. Just aim for 4ppm because there is a definate colour for that.
If you try for 5 you risk overdosing and slowing down the cycle
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