On nice thing about the old seatest hydrometers is that
you can take the swing arm out to calibrate it. Lightly
sand off the arm to make it float less, or lightly sand
off the center piece to make it sink less.

Wayne Sallee
Wayne's Pets



Cindy wrote on 6/6/2006 11:00 AM:
I have a new Coralife Deep Six hydrometer that I've been using for
the past year or so. But over the weekend I sorted through my trash can
full of aquarium supplies, and found my old "The Original" Seatest
hydrometer that I've had for probably 20 years.
The Coralife reads 1.022, and the tank has been doing fine.
The Seatest reads off the scale, well above 1.027! It's pretty
simple, I don't see how it could have gotten screwed up sitting in a
box? And my tanks did fine 20 years ago too.
I'm going to take them both to the fish store and see what they say,
but which one do I believe?

Cindy