Quote Originally Posted by Puffzter
Ye I handwater and why would it go bad?
I stir the tank everytime I water (every 12-18 hours) and it's all fine.
My 5 plants drink close to 1½ gallon/day so the 10 gallon tank is cleaned up and refilled every 4-6 days depending on how much I filled it last time.
I clean and fill with tapwater. Let it stand withouyt lid for 12-18 hours and mix nutes and pH correct it and after that it stands with lid on ubntil it's empty.

Puffzter
I was concerned with salt and also with bacteria building on the surface of the water.