I have to say that there are all kinds of speculations on what is best for our fish for in my main tanks are reef and eel tanks only and I keep the salinity at 1.026.
As most of us know that our lfs keep their tanks with F/O at 1.019 and corals and so around 1.023.
Now for the fish I will get for my reef tanks, I be keeping my 40 breeder/QT at 1.021 for as also if your a person who is in good standing with your lfs person, then he or she not would mind that the fish of your chosen be held there at the store, a time period to where you are comfortable with to in how long the fish would remain at their store.
I have to believe that this is one the main problems with peoples fish becoming sick because most you have to buy your fish the very next day and this really in my mind causes our fish further stress.
The thing with eels on this is that it takes weeks or months sometimes to know what you got if it eats or not for when it comes to eels, the sooner one gets their eel, the sooner it can become adjusted to it`s new surroundings.
So we all have ideas in what might be best for our fish, but also my fellow hobbyists is that we all not have the exact same level of success in this madder. For some will agree and disagree for also I keep any new arrivals for not less then eight weeks in the QT and yes, if I had need to use medications, that fish be in the QT for a much longer period.
I cannot see keeping a tanks salinity level at 1.009 or lower as one said here, that has to be quite stressful, is it not?
Buddy ><{{{{">