Fishfiend;98463 wrote: Hey guys,
Just a word to the wise... you get what you pay for. Those cheapo refacto from china have a tendency to be off. The prism inside is not very good so even after calibration it won't read correctly. As with test kits, I always recommend that you check yours with someone to see what it reads. The good news is if yours reads a little wonky (eg maybe yours is 3pts off) it'll ALWAYS be 3pts off and you can compensate for that.
Even if they are off, they still read more accurately than hydrometers.
