I expect you will find the tap level and tank level both in the region of 320 when you have your test.

ApistoGaz wrote:
As I see it, your guppy could have died for the following reasons:

1. Bad quality stock (as Fishlady has said)
2. LFS standard of care
3. Stress of transportation (think we can eliminate this as you have done you best to make it as stress free as possible)
4. Bad quality water in your tank (again eliminate this as your readings seem fine)
5. Other tank mates

As far as other tank mates are concerned do you have any other fish in the tank with the guppies? Have you noticed any possible fighting/bullying between the guppies themselves? Only guppies in the tank and I have not noticed any bullying.

As for the top two, what kind of rapport do you have with the LFS you bought them from?

The only reason I ask is you could speak to them and see if they have any had any issues. Other customers may have had problems or the LFS themselves may have lost some stock and if so I bet you they won't hesitate to speak to their supplier to complain. I could give them a call and mention it.

I think it's good business practice that a LFS should quarantine incoming stock before selling them onto customers as bad quality stock will tarnish their name and possibly lose them custom. However whether all LFS's do this is another thing. I bought them from Maidenhead Aquatics so I would imagine they have pretty high standards.

Fishlady wrote:
The two expressions of hardness you're most likely to see on care sheets for fish are mg/l (which is the same as ppm) and dGh which is German degrees of hardness. These two in your report:


Quote:

purplepower wrote:

TOTAL HARDNESS 320 mg/l

Degrees German 18