ESV BIONIC seawater system salt

[phi delt reefer]

alright - so i mixed as per the directions... salinity was low. about 31.5ppt. UGH! Did some research online and it looks like other people are having a similar issue. I calibrated my refractometer with Symbon 35ppt solution that was floated in my mixing water so the temps were equal. ESV's directions are supposed to mix to 34ppt.

I guess the good thing about this mix is because its a component salt i can just add some more pure salt.

The other people who had issues online calibrated all measuring devices again (*ie. scales, measuring cups) and re-mixed and also got low salinity again.

I am going to try to mix with scales next time and do a mix on a single gallon to figure out the exact amount needed per gallon and post my measurements. I have yet to measure the other parameters but will do so once the salinity issue is corrected.

I believe the included results from ESV are incorrect but I cant say for sure until I do a control test with weighted components instead of measured.

I just added another 1/4 cup of salt and the salinity appears to be dead on at 34ppt.