Type of salt to be used in pond

Lakeland, MN(Zone 4a)

We have a 15,000 gallon pond which we have enjoyed for 5 years. I find that if I keep the salinity in the pond to about 1% the fish are happy and it does not bother the plants. I have purchased aquarium salt in 50 pound quanities in the past. DH and I were discussing other options for salt. Does anyone know if other forms of salt can be used? We are thinking water softner salt that comes in a block, pool salt or table salt or other options...
Appreciate the input.
Epazota

Athens, PA(Zone 5b)

I have heard where others use the salt for water softeners, myself, I use pickling salt. You don't want the salt you put into your pond to have any iodine in it.

Virginia Beach, VA

I used to use pond salt which is pricey, then salt with out iodine but now i use the blue bag solar salt because they are very cheap because they come 50 lbs. Happy ponding!!! Belle

Ocoee (W. Orlando), FL(Zone 9b)

I use normal water softner salt (from Lowes or WalMart, etc) Make sure the one you buy is ONLY salt, they carry several different varieties (some to keep you water softener clean, etc)
Our Lowes carries the Morton Salt brand (just like salt shakers) but in 40 lb bags for around $6. It's an aqua colored bag.

Lakeland, MN(Zone 4a)

Thank you for your responses. I do not think I will be paying $$$$ for aquarium salt anymore. Isn't ponding great! It is one of the pleasures of summer.

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