so picture was for size comparison. .. im going to buy a smaller one and it wont have thermometer. ... so do i have to use separate container to test or can i just sanitize rinse and put hydrometer right in fermenter? and yes 1 g fermenter. im obviously not working with much brew. because of all that sediment.
I suppose putting into fermenter would be fine too so long as you can retrieve it back out ok, yet on this beer it may not work out given all the sediment. I use a vial as I brew 5g batches, so no big deal to lose some beer, but for you every drop is precious! BTW- I typically only take a hydro reading at bottling, I'm fine letting it run its course, and, gasp!, watching the bubbling activity (but don't tell anyone!). All mine end up at FG just fine.