Permanent hyposalinity

[sepulatian]

Fish should not be left in hyposaline conditions. It depends on the fish, but their natural SG is 1.025-1.030 or more. A constant lower SG is unnatural for them and stresses them. It takes years off of the life. This has been studdied and documented. Please google it.

 

[1boatnut]

Originally Posted by sepulatian
Fish should not be left in hyposaline conditions. It depends on the fish, but their natural SG is 1.025-1.030 or more. A constant lower SG is unnatural for them and stresses them. It takes years off of the life. This has been studdied and documented. Please google it.

I have googled it and did not find such information. Maybe I am googling the wrong thing. Do you have any supportive information you may have saved that you could pass on? I am under the impression that salinity lower than
1.025 -1.030,say 1.019-,1.021 can actually have some beneficial effects ,such as better oxygen.

 

[sepulatian]

This is from Steven Pro's online magazine Reefkeeping.com Here is the link to the article {EDIT: GOOGLE: STEVE PRO ICH} I coppied this passage from it.
One of the alleged benefits of this treatment is the resulting conservation of energy for the affected fish. Reef fish have to constantly drink saltwater and excrete the salt to maintain the proper osmotic balance. Lowering the salinity of the surrounding environment eases this energy demand on the sick fish, thereby allowing them to expend more energy towards fighting the infection (Kollman, 1998 and Bartelme, 2001). On the contrary, keeping fish in low salinity means that they don't "flush" their kidneys sufficiently. After long-term exposure, this can cause kidney failure and kill the fish (Shimek, pers. comm..)
This post was about permanant hyposalinity which is a SG of 1.009. A sg of 1.019-1.021 is perfectly fine for a FO tank.

 

[srfisher17]

Originally Posted by sepulatian
This is from Steven Pro's online magazine Reefkeeping.com Here is the link to the article {EDIT LINK) I coppied this passage from it.
One of the alleged benefits of this treatment is the resulting conservation of energy for the affected fish. Reef fish have to constantly drink saltwater and excrete the salt to maintain the proper osmotic balance. Lowering the salinity of the surrounding environment eases this energy demand on the sick fish, thereby allowing them to expend more energy towards fighting the infection (Kollman, 1998 and Bartelme, 2001). On the contrary, keeping fish in low salinity means that they don't "flush" their kidneys sufficiently. After long-term exposure, this can cause kidney failure and kill the fish (Shimek, pers. comm..)
This post was about permanant hyposalinity which is a SG of 1.009. A sg of 1.019-1.021 is perfectly fine for a FO tank.
Yes

There seems to be a lot of confusion between low salinity and hypo-salinity. Prior to LR, keeping fish at the low range mentioned by sepulatian (1.019-1.021) was very common. I keep my retro tank, with no LR, at a maximum of 1.019.I have kept fish long-term as low as 1.017, but don't recommend it. Going too far from natural conditions just defies common sense to me.