Heating Water For Water Changes

I have a water softener on my home plumbing system, so I am wondering what my best option would be for heating water for water changes. Would you recommend heating un-softened water on the stove? I have seen an opinion of two against this due to possible soap residue. What would be your recommendation for my situation?

 

How are you obtaining the water in the first place? Faucet? If so you can measure the temperature of the water coming out of the faucet and then fill the tank directly.

Heating water on the stove seems very impractical for a water change. How big is the tank?

 

I would warm it in a bucket with a heater ahead of time .Maybe a Rubbermaid 32g barrel even [got 4+ of those !]….

 

I drop a thermo in my change bucket and measure right out the faucet
I got a couple of those cheapy digital ones from petco

 

How are you obtaining the water in the first place? Faucet? If so you can measure the temperature of the water coming out of the faucet and then fill the tank directly.

Heating water on the stove seems very impractical for a water change. How big is the tank?

Original tank water came from the cold side of the kitchen faucet -not plumbed through the water softener. The (potential) problem with matching water temperature out of the tap is that the hot side does come from the softener. I have seen way too many warnings about using 'water softener' water for aquarium use. Tank is 20 gallons, so one big pot of boiling water mixed with a few gallons of cold tap water would be enough for water changes.