[AquaticLife] Salt in FW Aquaria
My brain hurts now from reading this. I hope yours doesn’t from writing it. 
Actually that was very good. I don’t read any scientific journals and had not heard of any study like that. I do use salt if treating for ich etc…, but not all the time. I had not thought of it hurting any of my egg layers or live bearers with regards to offspring. Gave me something to think about. Hence my brain hurting. lol Pam
To: AquaticLife@yahoogroups.comFrom: steve@familyszabo.comDate: Tue, 29 Jul 2008 23:24:12 -0400Subject: [AquaticLife] Salt in FW Aquaria
It is tough for me to come up with a subject line that is short andunderstandable for this post, so, I apologize if this veers off fromwhat you may think it is.Now I know that few of you read, or even look at scientific journals inpursuit of your fish hobby, but I at least skim the one I will bementioning four times a year (what a coincidence that it is alsopublished 4 times during the year), and do occasionally, as theopportunity presents itself, look at others that may have articles thatI would consider relevant, even in an obtuse manner. The publication Iam talking about today is _Copeia_, and, if not in your collection, maybe found in most large university libraries, as well as others that mayhave a program for fish (ichthyology) and/or reptiles (herpetology).The reference would be:Fuller, Rebecca C., “A Test for a Trade-Off in Salinity Tolerance inEarly Life-History Stages in _Lucania goodei_ and _L. parva_”, _Copeia_2008, No. 1, 154-157.The two fish listed here are North American fish, with _L. goodei_ foundin mostly freshwater, and _L. parva_ found in mostly brackish water, andare closely related. What was done was to breed these fish, the formerin water with various concentration of salt added to fresh water and thelatter to increasingly fresh water to determine the viability of theeggs and fry. As the water got increasingly saltier, the _L. goodie_ eggand fry viability decreased, and the opposite was not true for the _L.parva_. _L. parva_ viability of eggs and fry remained virtually the sameno matter the decrease in salinity of the water.So, the sage aquarist may ask, what does this mean to me? Well, frankly,it may not mean much. However, if you are one who likes to useprophylactic doses of salt in your tanks, and may wish to breed fish, itmay mean a lot when it comes to the number of eggs you get, and thenumber of fry that may be raised to maturity for fish normally found infresh water.Inferring does have its hazards. The study did not measure the viabilityof the adult fish in various salinities, so the above warning aboutusing salt as a prophylactic is merely conjecture, but if you are onewho always adds salt to a tank when doing water changes may want tothink about abandoning the use of salt, especially when breeding, toavoid any adverse effects it may have.Be aware that the temporary use of slat when treating for disease can beeffective, especially when it is indicated that it should be used, i.e.in the treatment of ich. However, using salt as a continual prophylacticshould be rethought.Have at it people.\Steve//
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