I use the RV filter from walmart. Place it at the end of the hose and don't add a short hose to it, unless it has plastic fittings.
I use table salt, pool salt, ice cream salt, canning salt, pickling salt and road clearing salt. Read the label, ingredients; salt only, no other additives. I checked the label of Always Save plain salt, salt and yellow prussiate of soda. No clue what that is so I won't be buying it again.
I get my bait saver products from Memphis Net n Twine. Not really any saving from the 2 stores here, but a larger container.
I use lump charcoal in the filter. Wet it down to kill the dust. Place in a bag and break it into small pieces.
I use poly pillow stuffing in the filter. A bag will last a long time. Can be washed and used again.