Hi Guys, thanks for the quick responses
I've got a tetrapond test kit. Just done a test:
PH = 8
Ammonia = 0
Nitrite = between < 0.3 and 0.3
The kit doesn't have a Nitrate test.
When I test them I hold them up to the light is that right? (This seems to make a bit of a difference with the PH one

)
I've read on here a few times about getting a "scrape" done. Presumably this means netting the fish and scraping it with something....? What does this entail

exactly (I do have an old microscope somewhere - or would I have to take it somewhere?)
Many thanks for your help.
Paul