Hi KarlTh and DrVader,
I'm not sure of the protocols, but could I impose on you to check the "pH, GH & KH" new thread I have just begun in Freshwater newbies, please?
You might also like to comment on the RTR posts I refer to from 2003.
All very interesting. Such a steep learning curve. I envy you having had the chance to study. When one reaches middle age and finally has an opportunity to delve, even superficially, into 'science', it's a real joy.
There's also a "Physics of the Fish Tank post in those Archieves.
Cheers
Greg