what is the ideal salanity?????????asap please ( pro help wanted)

jjlittle

Member
depends I run mine -.024 in a reef tank with lots of inverts. With inverts it is better to maintain a higher salinity.I hear in fish only tanks .020 is ok but if I had a fish only tank I would still keep it around .024.If you decide to raise it do it very slowly like over the next couple weeks and never more then.001 per time you raise. Inverts I have been told will parrish around .020 or less.Also what are you testing with Hydrometer or Refractor for my hydrometer was off .006 from the measurement with my refractormeter. If you dont have refractor get one they are much more accurate and worth the money.
 

acrylic51

Active Member
1.025 is perfectly fine....I've seen were some run a little higher than that.....Consistency is the key again!!!!!!
 

bigarn

Active Member
Just remember those readings are specific gravity, not salinity. For a reef tank a specific gravity of about 1.025 and a temp of about 82 will give you a salinity reading of about 35ppt. This is perfect for a reef tank. :D
Edit: Numbers aren't exact. :)
 

mudplayerx

Active Member
The ideal specific gravity is the steady one. That being said, a specific gravity of anywhere from 1.023 to 1.026 is acceptable in my opinion.
 

bigarn

Active Member
Originally Posted by mudplayerx
The ideal specific gravity is the steady one. That being said, a specific gravity of anywhere from 1.023 to 1.026 is acceptable in my opinion.
Those readings could be fine depending on the temp. The important thing is what it equals as far as salinity. IMO the salinity is the important thing. :D
 

scoobydoo

Active Member
is there a chart somewhere that takes specific gravity and temp and shows what salinity is? If not, can someone make one?
 

acrylic51

Active Member
Very true Bigarn the higher the temp will effect salinity.....That's why when you have higher salinity not as much oxygen present in the water as well
 

ophiura

Active Member
A specific gravity between 1.019 to 1.024 (and 1.021 specifically) was always considered "ideal" for a FISH ONLY system and is not a problem, IMO, so long as constant. It is still "out there" as a value (and engraved as ideal on many hydrometers) because it was prior I think to widespread invertebrate keeping. For inverts, this range can be absolutely fatal, so reef tanks, IMO, should not fall below 1.024 and ideally should be kept around 1.025-1.026 (using a refractometer).
 

mudplayerx

Active Member
I didn't feel like messing with the scanner, so hopefully this chart will come out correctly:
ps- make sure you maximize the window the chart pops up in or it won't display properly.
 
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