Double Doh!

 Having set my RO Unit up...................wrongly (well tubing anyway), I added my salt for a water change.

I went to measure the Salinity with my Refractometer.  However it slipped out my hand and snap.  I tried counter measures but it seems knackered.

Now, I'm using a silly little floaty thing (has temp and salinity) on it, but it's nowhere near as effective/accurate.  However, in the meantime I might just buy a cheap Hydrometer.

FD

 oops you sound as clumsy as I often am Frank

Hope everything works out ok

Oooops, have you looked on ebay at all?

 I have, much of a muchness in terms of price.

FD

 numbnuts