Never had much experience with one.. I've only used small ones in the past, and they were easy to clean out often.
Now I've got an underslung 150 litre plastic water tank on my van, which up until recently had a broken pump. Fixed the plumbing and used some of that aquapure or whatever powder, to clean it out. Emptied it again, rinsed it and filled it up again.
So, is it now "clean"? I mean, it looks clean.. But how can you really tell?
Also, do I need to use any chlorine stuff or additives to keep the water safe? I have not tried drinking it yet, I only use it to wash.
When you buy a new pump, hose, tap, tank or whatever component in a water system, is there any process to clean it out before first use? Or do you just put it in, pump some water through, and stop thinking about it?
I'm used to doing house plumbing, where you just let the water run for a while and you're set. But that's not standing water, in a 31 year old tank... So what do you van dwellers do with your water system to clean it?
Do you use "purifiers" after that?
Most importantly, do you drink it?