How to Use a Hydrometer for Fish Tanks

How to Use a Hydrometer for Fish Tanks. Part of the series: Fish Tank Maintenance. Hydrometers measure specific gravity and salinity, and they usually come in two types, which are the bobbing hydrometer or the hydrometer that needs to be filled. Find out how salt levels vary by the type of fish or animal being kept with help from the owner of a pet fish store in this free video on hydrometers and fish tanks. Read more: www.ehow.com/video_5226052_use...

[@yusufalisayed8140]

Can i use this for my flowerhorn fish tank?

[@jrios662]

It's funny none of these videos tell you how high is should be or how low or if it's too high or too low. That's absolutely shocking

[@uzis.perc.3070]

It’s funny different fish need different salinity levels so he can’t really tell you how high or low it should be. That’s absolutely shocking