Hey, yeah the water comes preety slow out of mine too. They are 32 gallon trash cans so I just fill it up, pour the salt in, and I keep a powerhead in each for circulation. Theres no way for me to tell how when its done so I frequently check it but I can safely let it run overnight into an empty vat and it will be nearly full in the morning. I'm installing a valve so that if I ever forget to turn it off the water will drain down into my house sump system instead of flooding my basement. Hope that helps!