Your Salinity
 

Inspired by the current "saltwater" topic. What salinity do you keep your reef at? Reef tanks only, please.

1.025 here. As suggested by natural reef averages.

I keep mine at 1.025 also.Seems to be the most accepted Sg

1.024... a bit lower than suggested but it works for me!

1.024/1.025 - honestly it changes a smidge from time to time, but usually closer to 1.024... sometimes ;)

salinity
 

1.025, although it wavers on occasion

Mine is changes too, up and down (evaporation , water chnges etc) but i keep it at least 1.024 and max i had was 1.026

I pretty much treat anything between 1.023 and 1.026 as close enough. I have serious doubt that the hobby quality instruments are capable much more precision than that.

you're just talking about hydrometers, right?

No refractometers too. If you take a look at what Steven Pro found when he tested a bunch of hydrometers recently (there's a link in the library section) while hydrometers certainly aren't good they don't deserve the reputation they have either. You could say that it's easier to get an accurate reading out of a refractometer but look at What Randy Holmes-Farley wrote in Reef Keeping a couple months ago. Calibrating a refractometer isn't a simple as most people think and if it is setup wrong then it isn't going to be any better.

I'm not saying that an accurate salinity measurement isn't important but whatever common method you use is prone to error. Given that determining if you really have yours at 1.023 or 1.025 is probably is either going to cost oodles of cash or involve some sort of voodoo.

i didn't have any problem calibrating my refractometer. am i missing something? i'd be interested in the article you mentioned.

It Goes in at 1.023 but in a 5G it ends up at 1.025 with evaporation.

I mix the water for a SG of 1.024 but it ranges from 1.024 to 1.025 in the tanks.

mine is usually .025 reef / fish tank

1.024 to 1.025 It seems to vary from time to time. Try to keep it at 1.025

1.026 for me. :)

DITTO.:wink:

I make sure i wash my hydrometer in fresh water after every use, and never had a problem with it

My target is to float my hydrometer at 1.025...but that hydrometer is calibrated to 60 degrees F, so my actual SpG isn't really 1.025. I would have to consult my conversion chart....

I have two digital pinpoint monitors in my sump. Use the second one to double check and I remove it to take to my mixing barrel to set the salinity for my water changes. But I have to mention that calibration is very important. I keep my salinity at 1.025 - 1.0255