Long term tap or well water storage.

I read that without activator, use 1-2 drops mms per gallon for long term storage say for rv water tank or 50 gallon barrel, now I cant find where I read it, it says, do not activate for long term storage or large quantities. I would rather use sodium chlorite alone in my rv tank and save my citric acid for drinking water purification or when I'm sick.
Thanks

Just buy chlorine dioxide tablets.

For long term storage you need to add a tablet every three months.that is how I treat my rainwater tank.

if there is a 50-liter barrel in the camper CLOSE THE SYSTEM, then it is enough to disinfect the water in the barrel only 1 time. But when you add new water, repeat the disinfection. There is no point in disinfecting a closed system into which e.g. some bacteria.

Which tablets, what strength and where do you buy them, thanks

It depends where you live. Just search for chlorine dioxide tablets in your web browser. Here's a site in Australia selling the exact tablets you need.

www.coastrv.com.au/products/plumbing/cans-tanks-accessories/item/natural-water-chlorine-dioxide-tabelets

Hi Bill, just so I'm clear on this, is your answer, yes sodium chlorite alone without activation will do the job of killing bacteria in my stored RV water tank?
Thanks!