rockys_pride;162415 said:
I'm pretty sure salinity/specific gravity measurements are temperature dependent, no? I tried doing this in the past and ended up having to adjust my mix once the temp went back down to 78 for the water change. Do you just have a predetermined amount of salt/volume that you use to mix your batch? Just wondering how you avoid this issue as I find that the Salinity
does mix better at warmer temps. I end up just mixing at the tank temp since it takes longer for the bucket to cool down from 86 degrees than to heat it up to 78 with my 100W heater.
To the OP, I've had issues with residue mixing 5 gallons at a time. I've found the only way to avoid this is to heat the water to about 80 degrees and
slowly add the salt with the powerhead running in the bucket. If I do this the cloudiness is gone within a few hours. I've also found that I have to point my powerhead at the bottom of the bucket as this kicks up any residue that settles on the bottom and mixes it. There have been times where I tested the SG of the water with the residue on the bottom, adjusted the powerhead so that it hits the bottom of the bucket, then retested the SG to find that it increased from 1.025 to 1.026/1.027. Don't know what is precipitating out in that residue, but I try make sure it all mixes in instead of kicking it up and adding it directly to the display when I pump in the water...just for peace of mind.
There was a thread on one of those "other forums" where Seachem had indicated it was best to use the product while it was cloudy. I've tested the cloudy water immediately after mixing vs anywhere from several to 24hrs later and noticed the same thing with the SG increase.
I'm not unhappy with the product as my tank is doing well...I just need tend to mix 24hrs ahead of time. Of course, I've only had the tank up since Feb and have been doing weekly WC with only salinity...so I have no way of comparing Seachem's product to any others out there.