Originally Posted by alysalouise
Petco has all their tanks as brackish water usually, i know my petco does, its 1 tablespoon per gallon of water, and they told me to do a mounding tablespoon lol, it actually killed my parasite that lifeguard didnt kill
Petco uses aquarium salt in their tanks, but it isnt enough to be brackish, not even the true salt you would use to do brackish I dont believe.
They use the aquarium salt to hide the parasites and such hiding in their over populated tanks, petsmart does it too, as I am sure many independant aquarium stores might do.
Aquarium salt has its benefits, but can be harmful to those who cant tolerate any sort of salinity or sodium chloride (which is what aquarium salt is, which is slightly different than marine salt, and true brackish you would use marine salt as brackish is where freshwater streams, rivers, lakes slowly start to mix in with the ocean).
If your tank is nothing but livebearers like Mollies and Guppies, then aquarium salt is fine to use per the dosing on the carton...be aware to only add what you take out as the salt does not evaporate, dissolve, or filter out. It can only be removed via water changes. So if you do a 50% water change, you still have half of the salt origionally put in, and should only add back the 1/2 taken out, if you use it. Now if there are other fish who can tolerate small salinities, but dont like it, and you still wish to use it, then I would do a much smaller dosage.
For instance, my 29 gallon has guppies, neons, a molly, and a bunch of random cories. Well, the neons and the cories arent particularly fond of salt, so once in a while I might add a small teaspoon of aquarium salt if I feel like it. It may not do anything at all in that small amount, but I dont wish to risk my less-tolerant fish over salt that the mollies and guppies dont actually NEED in the first place. The mollies and guppies just tolerate it. At least mollies bought today tolerate it, as they arent the true brackish mollies found in the wild, and are so over tank breed in freshwater, the probably dont know what true brackish is.
And to transform for instance a freshwater molly into a brackish set up, it would take a very slow rise in salinity over a period of time to switch the tank over safely. Or if adding a freshwater molly to an already establish brackish tank you would have to be very careful and do an extended drip acclimation.
Just thought I would add the info to the thread. :)