The Reef Tank banner
hydrometer comparison
1-1 of 1 Results
  1. General Reef Discussion
    Hey all, I got a new Hydrometer today because i was a little worried that after several years in storage, my old deep six would be compromised a little. I choose to get an instant ocean one. I just compared the two readings. Instant ocean: 1.029 Deep 6: 1.021 OK, so what should I trust...
1-1 of 1 Results