Finding water information on your supplier's website: gh/kh and more

[TankWarrior]

You're actually given both GH and KH, albeit in different units. Hardness degrees Clark is essentially GH, just presented in an alternative unit. To make sense of it, you'll need to convert it. There are numerous units for GH, which can be quite confusing.

To find your GH, simply head to the calculator on the forum, navigate to the Converter section, and select hardness. Enter the Clark number in the Clark box, and you'll see your corresponding GH value in the dH box, as well as your hardness in ppm in the mg/l CaCO3 box. Some fish profiles list hardness in dH, while others use ppm, so it's essential to have both.

Regarding KH, look at the table in Matt's post and switch to the 'full' view. You'll find 'alkalinity as CaCO3' listed, which is essentially KH. Take note of the number in the 'average' column – that's your KH in ppm.

Apologies, sSjey. I didn't think that one through.

[sSjey]

It's easy to overlook that things work differently elsewhere - I'm guilty of it too.

[graye]

I've had a similar experience in my region, where I could obtain quarterly reports from local relay stations, providing in-depth water analyses. This was particularly useful as our city has two distinct water sources - a deep hardwater well system and a soft, acidic lake system. I could review the data block by block, and I must admit that when I was house hunting, the ability to access usable tap water was a key consideration for neighbourhoods. Having a large setup, I rely heavily on tap water to keep everything running smoothly.

Unfortunately, a problem with the well system led to lawsuits, and the city made it much more difficult to access this information. Now, I have to phone the water plant, but as someone mentioned earlier, the staff are always pleased to chat with someone who's genuinely interested in their work. They're very helpful and willing to share their knowledge.

[geeky]

Thanks for all the responses. I've not had a chance to properly look into this yet - all the different units have left me a bit baffled. To be honest, life's been a bit hectic lately and my brain's not really cooperating at the moment. I just can't seem to wrap my head around it right now. We've managed just fine without knowing this information for years, so it's not the end of the world. I was just curious about it.

I did want to say thanks to everyone for taking the time to reply, though. I'll come back to this when I'm feeling more on top of things and can take it all in.