Originally Posted by jlthomson33
oops it is a neon! Well, all fish are happy, one catfish in particular has fallen in love with the plants and is preening away at them! The others are keeping the gravel clean.
Husband forgot to ring water board, however I have found the info for my postcode (zipcode?) on their website. The report was very detailed but the GH and KH values aren't stated.
The hardness level is described as "very soft". The hardness level is given in UK "Clarke" units, which is 1.575. I did a google search for a converter and found this http://users.tinyonline.co.uk/chrisshort/waterhard.htm
which converted the above value to "22.49ppm as calcium carbonate". Does that sound right?
Don't know about the conversion, but 22 ppm certainly is very soft, so that matches. That is quite rare, from my experience, having very soft water in the UK. Lucky you.
This means you have very little if any buffering of the pH, so all else being equal, the pH in the aquarium will lower. The next issue then is to decide where you want it, and that of course depends upon the fish and where they come from. And by that I mean are they commercially raised in the UK (and thus probably in harder water) or wild-caught, or raised by someone with soft water. The species is often a guide, as for instance neon tetra are going to be commercially raised unless you have a store that specifically imports wild-caught neons. On the other hand, cardinals are more likely to be wild-caught; however, they are now being commercially (tank) raised in Europe, so you may have tank-raised fish in your store. Ask the store. Another point, if your water is soft so is the store's if it is in the same area, unless they do something to raise the hardness (some stores here do, I also have very soft water). I always ask the store what if anything they do to their water if I am buying fish from them for the first time. Since I add very little calcium to my tanks (because I have mainly wild-caught fish from SA and SE Asia) to keep the GH < 2 dGH [which is about where your water seems to be] I want to know if the store has raised their hardness to 12 or 15 or whatever so I can acclimate the fish better.