- Posts: 86
its 1:20 am, i just wanna go to sleep but the damn thing is still draining. Who knew 40 gallons would take so long. Yes i purged pressure to allow air into it to help push the water down faster. What’s pissing me off is i have seen 0 sediment come out, which is refreshing to know the tank is clean……but makes this maintenance process a little less satisfying.