There are pockets of variable salinity water near river outlets into the ocean that fish swim past and don't suddenly start floating. Fish can deal with the salinity changes much more readily than they can deal with toxic conditions.
Slow acclimation exposes the fish to low pH in the presence of increased ammonia making it more toxic. Additionally, slow acclimation exposes the fish to water low in O2 as it stagnates.
If the large swing in SG was dangerous you'd think those of us who float, cut and dump would have lost some fish - but it hasn't happened.
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Originally Posted by Pan
then when doing hypo treatments you would not have to slowly increase salinity..hmm..
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