Ah sorry I'm just in the process of topping it up now. It's never usually that low but we recently did a water change.
So we use tetra 6 in 1 test strip dip sticks, I know not the most reliable but nitrates usually around 10-25. Nitrites 0, GH 8, KH 6, pH 7.2, chlorine 0. We have a separate API...