brackish to fresh.....

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midnight

Polypterus
MFK Member
Jun 20, 2006
5,716
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under a bridge in fl
ok for a few months i been trying to make a 3g brackish tank fresh
every once in a while i take a cup out
then add a cup of fw
also as it evaporates i add fw

so today i took my water to the lfs to find salinity
they said it was .002
what is brackish?
and how close am i to fresh?
:popcorn:
 
midnight;2155520; said:
ok for a few months i been trying to make a 3g brackish tank fresh
every once in a while i take a cup out
then add a cup of fw
also as it evaporates i add fw

so today i took my water to the lfs to find salinity
they said it was .002
what is brackish?
and how close am i to fresh?
:popcorn:
Click to expand...
Fresh is NO salinity but your pretty freakin close, The evaporation method doesn't work though as the Salt doesn't evaporate it's the take a cup out and add a cup of fresh that is making the change happen, Whats in the tank?
 
cool
i thought the "white crust" on the tank was salt? from evaporation?
hmm

like how close? LOL
am i close enough to aclimate to fresh?
or should i wait to move them till the 3g is totally fresh?
:popcorn:
in it is
2x baby hogchokers
1x some kind of baby goby "forget the kind"
1x some kind of brackish minnow lol
:D

another thing
say a fw tank
you add aquarium salt
does that raise the salinity of the tank?
if so to what?
 
If there are brackish fish in the tank, then why are you trying to make it freshwater? At least move them somewhere else before you do that.
 
?
If they're brackish, you're not supposed to have them in fresh. That's kinda why they call it brackish, and not freshwater. What does the goby look like? Some gobies actually are freshwater, and I might be able to tell if what you have is.
 
that goby you've got looks more like a darter. BW fish should be in BW, sure you can find and keep several species in FW for a time, but they should be in BW for best health, most that are found in FW are only there for a time. as for acclimating them down to FW, you can do that in under an hour with some airline hose and a large jar/bucket, just fill the container 1/3 of the way with BW and start a slow drip of FW into it, when the container is about 1/2 full, give them a 10min break and then full the container most of the way up, then dump the water down to about 1/3 full and repeat, works for acclimating BW fish from FW to BW as well. and the white crust isn't all salt, usually its calcium deposits. aquarium salt will raise the salinity of the water, however it doesn't have any of the elements that BW fish need(in fact its not even the right kind of salt, its magnisium phosphate aka epsom salt not sodium chloride)
 
You are wrong in that you think brackish fish are going to be fine in freshwater. Brackish fish are used to change (in general), so acclimating them quickly probably isn't a problem. It's what you're acclimating them to that's the problem.
Acclimation won't kill brackish fish, freshwater will.
Unless I missed something and those are all freshwater fish, something's wrong.
 
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