palmer
Member
Just a word on hydrometers...I'm not going to name any brands here but...I had one of the plastic fill with water types that was reading way too high. The hydrometer was reading .027 but when I used an optical model and an electric probe ($500 model from the lab where I work) they both read about .034. I then used the same three hydrometers on a friend's tank and got the same margin of error. Then used the same brand plastic hydrometer, but a differebt one, and got not as high of a margin of error but it was still reading about .004 too high. I know they have to be seasoned before use, which they were, and they are not highly accurate to begin with, and they probably work fine for most people, but I'm just throwing this out there as more credence to ...You get what you pay for. I'm wondering if this was the reason that my zo's were not opening some time ago, the salintiy may have been too high, not too low.