Well Wilkersons book will probably be of more help than I will, but Ill give it a shot :-)
First off, since this is your first brood you will likely get lots more. If this attempt doesnt pan out, at least you will learn a good bit and be more ready the next time.
Im pretty sure the only...
Well Im not sure why you would want to measure the TDS of saltwater.
My tds meter goes up to 999 and does a great job checking my rodi and tap. The only reason to have one that reads higher is if your tap is higher than 999, which isnt too common tmk. I paid 25$ for mine from...