I'm curious about these two old wives' tales, where did they come from?
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Here's two oft-mentioned things about freshwater aquaria that I'm not sure where they came from. I'd like some clarity on them.
1. 'Tetras/other shoaling ...
uneven no are lucky i guess =p lucky seven, no 9 and that kinda stuff.
as for salt it contains trace minerals and is a common commodity used in he fish industry.so i guess it was a miracle thing for them but we know better =)
I can't say where they came from but Petsmart has little cards on each tank and some of them read, "aquarium salt needed" which to me actually back some buyer's off. My sister was looking for a few small fish for her son and she didn't want to mess with salt and such so she passed on many good fish.
i wouldnt keep any tetra in a pack smaller then 6 ( which for you, is an even # ) but ofcourse the larger the group the better if space is available. the odd # thing may come from people keeping less then 6 which would mean 2 or 4 which could result in more stress with the fish, and that extra one ( making the group 3 or 5 ) distributes the aggression better? who knows im thinking outloud. anyways keep a schooling fish in groups of atleast 6 and youll be good.
as for aquarium salt ( which for anyone interested is different then marine salt ) who uses aquarium salt? lol and IMO should never be added to a tank 24/7, all the time.
petsmart wants you to add salt with just about, if not every fish. i think thats their way of selling another product while someone not knowing anything is making a purchase.
Salt should never be used 24/7. Salt, over time will build up in excess on the fish skin and gills, and will clog up their gills which constricts breathing, which will lead stress and ultimately, death....
people at LFS will try to sell you anything just to make a buck.
hey guys salt is beneficial in some instances. salt will actually reduce the toxicity of ammonia and nitrite, it acts as a general antiseptic by affecting less developed osmoregularatory systems such as white spot. also a fishes concentration of salt is approximately 10%, when a fish breaks its skin it losses salts. while i do not agree with the constant adding of salts, it does have its uses.
Also i fink that simply saying shop workers are trying to make money by telling u to add salts is judgementall. these staff are often undertrained and often not have no training at all. so they pass on what they read on the advice stickers and the myths that are passed from one to another. i experience this every day n it is ultimatelly down to companies not training their staff apropiately. Thats just my opinion any way.