I usually try to keep mine at 1.025. It doesn't fluctuate more than a point either way. Usually no more than 1.0255. (I stay there to allow for margin of error on the refractometer). I picked up a box today. The fish tank has the box for the same price as a bucket of IORC. I'm hoping it boosts my magnesium levels!
I have been keeping mine around 1.026-27 depending on evaporation. I was hoping to acclimate all fish and inverts to a higher salinity so I can have more for future corals. Is this wrong or too high?
How are you measuring to the that accurately... I have an older refractometer but can't make out father than 1.02x. Sometimes I can see the line in between but not very well.
Thats okay, it happens in this hobby. Will probably replace it with a Lawnmower Blenny if the LFS has one.
I just call it that when it registers between 1.025 and 1.026. There is not a line there. I calibrate it to 35ppt solution. I also think 1.027 sounds a bit high as most things I see say something along the lines of 1.023-1.025 for care. That's not to say that it has to be that exactly but there is a margin of error on your refractometer so it actually could be reading higher than your measurement (or lower). I feel like 1.025 is a safe place to stay. Natural sea water is 1.026.
Your probably correct, LFS said 1.025 is better but they also said my water was at 1.025 so I might bring my refractrometer in next time.
I would calibrate it to some 35ppt solution. Don't just calibrate it to someone else's refractometer because theirs may not be correct . And remember that it has a margin of error. I believe it's +/- 0.001 so it could register 1.025 but really be 1.024-1.026. I have some solution if you want to use it sometime.