Hi @MissATV yep, what @Wookii said. I measured by tipping onto scales on a bit of paper, ground it up best I could with the back of a spoon, then dissolved it in a bit of water before chucking in. (I needed such a tiny amount it was easier to put a weight on the scales then add on top of that.) It all looked a bit The Wire.
Don’t worry if you still end up with white bits in the tank - they eventually dissolve.
Don’t worry if you still end up with white bits in the tank - they eventually dissolve.