Tetracycline doesn't treat gram negative.
Magnesium Sulphate also spelled sulfate, aka Epsom Salts.
Pure, no additives, available in large quantity from warehouse stores (and great use as a bath additive for humans - adding a little baking soda and drops of essential oils, for relieving stress from fish problems and everyday life ) Otherwise the local stores have it in the grocery store and pharmacy.
Magnesium Sulphate also spelled sulfate, aka Epsom Salts.
Pure, no additives, available in large quantity from warehouse stores (and great use as a bath additive for humans - adding a little baking soda and drops of essential oils, for relieving stress from fish problems and everyday life ) Otherwise the local stores have it in the grocery store and pharmacy.