Best way to prepare water for water changes

[militantpotato]

I fill two 55 gallon barrels tied together using pvc and uniseals with cold tap (hot water tanks are bad news) and let it age 24h with a pump recirculating the water. After a day or so it's up to temp. Dose with prime while i drain the aquariums, use the same pump to push it into the tanks. Stupid we easy and safer for the fish.
I also test for tds levels to ensure the tap isn't too far off the norm from rain or water works treatment. Lost a few fish that way.

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[venymae]

I dose the tank for the amount of water I will be putting into it, not the entire tank volume (wasteful is not my style) I over-estimate though to be safe. Then I just dump the new water in. I don't temperature match as I figured when you have a heavy rain in nature, the temps will swing and fish are ok with it. I use my hand to disrupt the flow a bit so it doesn't dig a hole in the substrate. Our water has chlorine and chloramine, so standing the water does not make it safe here.

 

[ScaryFatKidGT]

I dose the tank for the amount of water I will be putting into it, not the entire tank volume (wasteful is not my style) I over-estimate though to be safe. Then I just dump the new water in. I don't temperature match as I figured when you have a heavy rain in nature, the temps will swing and fish are ok with it. I use my hand to disrupt the flow a bit so it doesn't dig a hole in the substrate. Our water has chlorine and chloramine, so standing the water does not make it safe here.

That is the nice thing about a 150g tank a 5 degree miss match on 10% water change is nothing