No I full dosed for the first day (as it's safe for loaches) and I've been half dosing since.
Nope, I haven't added any salt.
In tank: 8 leopard danios, 1 opaline gourmai, 2 (possibly 3) clown loaches, 1 brittlenose pleco
I'll have a look for the missing loach in the morning.
Thanks. I'll give the article a read.