- Joined
- Dec 30, 2016
- Messages
- 32
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- 10
So my tank has been up and running for about 2 months. Got an ATC refractometer and calibrated using RODI like the instructions say had an SG of 1.026 for awhile added an ATO system and now it sits at approx 1.023. Got curious and bought some cal solution for the refractometer and well there's a pretty big dang difference between the two. I calibrated using the solution at 35PPT and now my salinity is sitting at approx 1.019... so my question is which is the true reading I noticed as soon as my salinity started to dive significantly over the weeks a 2 damsels died on me. Could it really be that the calibration method of RODI screwed me and now how should I approach bring salinity up rapidly but not enough to shock my fish, the issue about bringing it up rapidly is I have a torch coming tomorrow and I heard it needs to be in the 1.026 range for corals not so much fish .