what reading for my is recommended my salt is reading 1.021
acrylic51 Active Member Jun 8, 2005 #2 Are you using a swing arm hydrometer or a refractometer? 1.021 is low should try to raise it
jjlittle Member Jun 8, 2005 #4 I would get it up just a bit inverts dont like below .021 I run mine at .025
jjlittle Member Jun 9, 2005 #6 Make sure you do it slowly dont do more then a bump of .001 per week a big quick change is no good.
