Hydrometer question

[amstar15]

what about a pinpoint monitor that measures the salt levels in your tank? anyone every heard of these or used them? I think those would be suitable? even better yet.. no guessing.. its sitting on the monitor in digital numbers... you can even buy calibrating solution for it. pricey but it maybe the best

 

[steelhealr]

I"m sure it's a nice piece of equipment, but, unless you are keeping expert level SPS, it is probably way overkill and you'd be better off spending the money on salt, fish, corals, etc. SH