rocknurworld2006
Fish Aficionado
can u buy distilled wtaer in the supermarket?
You can buy de-ionised water. It's marketed for steam irons.
Why?
halfords,or any motorists shopscan u buy distilled wtaer in the supermarket?
halfords,or any motorists shopscan u buy distilled wtaer in the supermarket?
halfords,or any motorists shopscan u buy distilled wtaer in the supermarket?
yep - seconded. They use it to top old car batteries (old type wet bateries) and to top up engine coolent if anly a small top-up is needed.
If you have a refractometer - I'll assume that your using it for a marine setup - or at least a brackish setup...
If that's the case what are you going to be mixing your salt into?
You should ideally be using RO (or DI or distilled) so that you don't have any contaminates in the water to start with...
And if you think about it literally, the reason that you need to calibrate with RO is because the same contaminates will throw off the reading.
so if you calibrate using RO then use it to measure salt mix in tap water you may see errors in the reading...
does that make sense?