Mollys and aquarium salt...

The August FOTM Contest Poll is open!
FishForums.net Fish of the Month
🏆 Click to vote! 🏆

Joined
Mar 17, 2005
Messages
9,869
Reaction score
1
Location
Southampton
(Yes i know this is a livebearer section thing, but...)

Basically i often see people advising others about salt and mollys and saying things like "You have to put aquarium salt with mollys for them to be healthy" or "if you don't use salt with mollys they will get sick" etc, but this is not the case with my experiences with them and salt.
I have been keeping standard mollys ever since i started fish keeping and they are some of my favorite fish, my current mollys i have had for about over a year and a half now and never have they been ill once. No whitespot, fungus, fin rot, velvet, columnaris- nothing. On top of this i have never ever used aquarium salt once for anything in any of my tanks- my 2 female mollys have always been the healthiest and most active fish i have ever had and my male molly is doing quite well too considering he's 5yrs old, although he's always a bit on the skinny side but i think thats due to his age.

The thing with aquarium salt is that, if its true that you can only have healthy mollys if you use salt with them, then why are my mollys so healthy? I do not think its true that you have to use salt with them for them to be happy and healthy.
I understand that if you did use it, it might make them seem a bit more "perkier", but that is also true for many other things- adding bogwood with tannins makes the majority of fish healthier, adding live plants will help keep your fish healthier, adding extra filtration to your tank will make your fish seem healthier- but thats not to say that you have to have any of these to have healthy fish, its more than easy to have healthy fish as long as you keep water quality good and you give them a varied nutritious diet and lots of space.
Its just realy bugging me when people say "you HAVE to have aquarium salt with mollys to be healthy", most of the time when people say this the person getting this advice imediatly adds a heap of aquarium salt to their tank and doesn't take into consideration that their tetras, corys or plecs or other scaless fish are not going to fair well from this.

Im only speaking for standard mollys here as they are all i have kept in the way of mollys, it may be a different case for sailfin mollys i don't know but i wouldn't expect so- a while back i was reading an artcile in the National Geographic magazine on some amazon adventure into the jungles or somthing, it actually showed pictures of sailfin mollys in their natural habitat living in a bizarre tropical ponds connected by an underwater river system that lead down to the sea- it had pictures of sailfin mollys living in both freshwater habitats in the jungle ponds itself and also living in the more brakish rivers that lead down to the sea.
It stated that the mollys preferred to breed in the fresh water systems but lived on a more general basis in the more brackish ones, the female mollys too also preffered to live in the freshwater systems while the males only realy came to them when they were interested in breeding.
So in a sense, they can happily and healthily live in both brackish and freshwater although it stated they weren't truly brackish fish and the salt contents weren't very high in the brackish water systems.

I would like to hear your opinions on this debate, and wether you believe you have to have mollys in brackish water to be healthy or wether you think that it is more or less so for sailfin or standard mollys in either of the systems etc
:thumbs: .
 
Hi, I have Mollies and I have never used aquarium salt. I have a Pleco and some loaches. Don't think loaches tolerate salt but I'm not sure. I recently medicated the tank as one Molly got pop-eye. I am sure it was caused by an injury, not disease. The treatment said to put some salt in if possible but I couldn't. It worked well and the Mollie's eye is back to normal size. My Mollies are all healthy. :)
 
i agree that you don't HAVE to add salt for mollies...then again, we don't have to add driftwood for plecos, and we don't have to add frozen/live food....we could feed solely on flakes and (most of) our fish would be rather healthy and would most likely seem active....however, it is my belief that as fishkeepers we have the responsibility of trying to imitate the fishes natural environment as much as possible...

that being said, since a lot of the fish we buy are not wild caught, all they know is true freshwater in a rather bare tank, etc....thus, by providing them with an even more interesting environment than at the store they will thrive, even if it does not contain the same elements as nature....however, it is my belief, that although the mollies may be in great shape in freshwater, SOME mollies would do "better" with some salt.. i.e. live longer, etc...just as most fish become more active with more tannin-stained water, feeding live food, moving tank layout around, etc

just my 2 cents
 
Someone with more experience than I will probably confirm or debunk this, but aren't mollies brackish fish? Just because they can survive in fresh water doesn't mean they should.

If you want freshwater mollies, why not just get platies? They are closely related and freshwater native.
 
I personally wouldn't set up a semi-brackish or brackish tank just for mollys though as i don't think they need to be in one 24/7 to be healthy, it may even be true that keeping them for their entire lives in one could be just as "damaging" if it is as keeping them ina freshwater setup for their entire lives, BUT...
I think that some forms of meds may work better for some types of fish than others- the good thing about aquarium salt and why it is such a good med is because it kills off alot of parasites living in the water.
If my mollys ever became ill with say somthing like, fin rot, i would use aquarium salt over chemical meds simply because it is a more natural med that is naturally found in some of their habitats. It would be interesting to see which is more effective as a med.
Its like using those natural indian leaves things in betta tanks to help make them healthier as it is a natural antiseptic found in their natural habitats.

As for life expectancy though, i don't think there has ever been a proper experiment done on mollys to see wether they live longer in a brackish or freshwater enviroment- you would have to raise fry from the same batch, some in a brackish enviroment and others in a freshwater one and moniter their behavior and health right up until the day they died, which could take up to 4-5yrs or more if they lived their full life expectancys.

I think alot of this controversy stems from the fact mollys live in both freshwater and brackish in their natural habitats, while most fish just live in one or the other.
 
If my mollys ever became ill with say somthing like, fin rot, i would use aquarium salt over chemical meds simply because it is a more natural med that is naturally found in some of their habitats.

If a molly got fin rot in freshwater, could it be the lack of salt that caused it? Using salt to then treat the "disease" wouldn't actually be medicating, it would be removing the cause. I don't know what mollies natural habitats are, but I thought they were brackish fish that just happen to be hardy enough to live a year or two in freshwater, but can live up to 5 or 10 years in brackish. Correct me if I'm wrong.
 
ravekiss said:
I have lyre tail mollies that do great without aquarium salt.
not trying to pick a fight, just being a devils advocate a little, but.... define how you know a fish "does great"...surviving and thriving are different things...
 
Undawada said:
If my mollys ever became ill with say somthing like, fin rot, i would use aquarium salt over chemical meds simply because it is a more natural med that is naturally found in some of their habitats.

If a molly got fin rot in freshwater, could it be the lack of salt that caused it? Using salt to then treat the "disease" wouldn't actually be medicating, it would be removing the cause. I don't know what mollies natural habitats are, but I thought they were brackish fish that just happen to be hardy enough to live a year or two in freshwater, but can live up to 5 or 10 years in brackish. Correct me if I'm wrong.
Well as you know my mollys have never got ill once in freshwater so if you only get fin rot in freshwater then why havn't my mollys had it?
As i stated before mollys, live in both freshwater and brackish enviroments, it stated in the National Geographic magazine that they prefer to breed in freshwater and females also prefer to live in it while males and females that are not pregnant prefer to live in brackish water, but when i say "brackish" we are not talking about true brackish, the salt levels in their brackish habitats are very low and are only realy semi brackish.
Putting a molly in a brackish going on marine enviroment would actually lower their life expectancys as (correct me i have got the right organs), their kidney/liver would be hard stretched to cope with filtering all the salt through it.

The average life expectancy, wether in brackish or freshwater is 4yrs average, 5 if we are talking about good genetics as genes play alot in the outcome of how long a molly lives like many other animals/fish, but they certainly don't live up to 10yrs wether in freshwater or brackish.
 
Well as you know my mollys have never got ill once in freshwater so if you only get fin rot in freshwater then why havn't my mollys had it?

I never said mollies only get finrot in freshwater, I never said your mollies have finrot.
This was a hypothetical answer to a hypothetical problem. It sounds like there is an undertone for a personal argument here, and I don't want that.

I'm no molly expert, I've never kept them, but that's because I have cories and I recogize cories do not tolerate salt and mollies prefer/require it.
 
Undawada said:
Well as you know my mollys have never got ill once in freshwater so if you only get fin rot in freshwater then why havn't my mollys had it?

I never said mollies only get finrot in freshwater, I never said your mollies have finrot.
This was a hypothetical answer to a hypothetical problem. It sounds like there is an undertone for a personal argument here, and I don't want that.
Sorry i wasn't meaning to sound or be arguementive towards you, sorry if you felt that way i wasn't intending you to feel that way- I wonder though wether fin rot is more common in freshwater setups or brackish ones though.
 
No worries. It's hard to guage someone's tone in printed word.
 
Mollies don't NEED salt to survive... just like we dont NEED ice cream to survive... but we like it! I have used salt instead of meds on my mollies and it has worked great!
 
Mollies don't NEED salt to survive... just like we dont NEED ice cream to survive

That's a bad analogy. Homo sapiens don't have access to ice cream regularly in their natural habitat, and haven't evolved alongside ice cream.
 
Undawada said:
Mollies don't NEED salt to survive... just like we dont NEED ice cream to survive

That's a bad analogy. Homo sapiens don't have access to ice cream regularly in their natural habitat, and haven't evolved alongside ice cream.
I only meant that they/we don't require it to live- but may prefer it
 

Most reactions

Back
Top