Saltwater to fresh conversion questikns

[CaptainAquatics]

Hello! So I will recently be getting a 100 gallon aquarium, I plan to move my community of freshwater fish that currently reside in a 75 gallon to this new tank. My questions comes from the fact that this tank was a saltwater aquarium. How do I properly prepare/clean this aquarium for freshwater fish. My main concern is residue salt making the water have a higher level of salinity than is ok. Thoughts?

 

[tlindsey]

Hello! So I will recently be getting a 100 gallon aquarium, I plan to move my community of freshwater fish that currently reside in a 75 gallon to this new tank. My questions comes from the fact that this tank was a saltwater aquarium. How do I properly prepare/clean this aquarium for freshwater fish. My main concern is residue salt making the water have a higher level of salinity than is ok. Thoughts?

If aquarium was just used for for fish only I personally would just rinse everything thing off with hot water. If the aquarium was used for a reef setup and there is Coralline algae on the glass fill the aquarium half water and white vinegar and let it soak for a few days.
The Coralline algae that you can't remove will eventually fall off the glass over time and won't harm freshwater fish. I've personally done this in the past.

 

[TwoHedWlf]

Like tlindsey says, rinse everything off and fill it up. I might not even bother with the coralline unless it's all over the glass and you want it spotless.

 

[Yuki-Rihwa]

I even re-used SW live rocks for FW setup to act in place of bio-media material and its work great, just rinse and soak in FW for awhile.

 

[Joshuakahan]

Like tlindsey says, rinse everything off and fill it up. I might not even bother with the coralline unless it's all over the glass and you want it spotless.

+1
I’ve done this a few times and had light coroaline on the glass and just left it alone and it went away on its own after a few weeks