Refrac!

[grcforce327]

Filled the tank a week ago using a cheap oceanic hydro,while ordering the refrac, rated for saltwater, from Dr. Fosters. The hydro read alittle above 35ppm.Broke out the refrac,and that thing read 35ppm on the nose.:lol2:

 

[Mekanic]

I always used a cheap Red Sea hydrometer for making my water change water, so fast and easy.

Then I got an Australian Ultra Gold Hammer about 6", and put it in, and immediately it looked bad. Seeing massive dollar signs begin flying around I bought the D-D Refractometer made for ocean water....

Found my salinity at .030!

I tried getting away with the cheap route and it nearly cost me an extremely expensive coral.

 

[bertoni]

A fair number of the hydrometers seem to be fine. It's the exceptions that cause problems.

 

[Mekanic]

Mine was spot on accurate compared to a friends MD Refrac about 2 months after I bought it, but 1 year later even with normal cleanings it went askew..

They might be accurate out of the box, but I would never trust one over 6 months old again.