Water tank sterilising

[Cardiffboy]

Hi, I have a 20 ltr fresh water and 25 ltr waste water tanks behind the kitchen, inside back doors.
Question is, should I sterilise them?
If so, what with? And how often?
I only use the water once boiled ( except for brushing my teeth)
Look forward to answers

 

[Riverbankannie]

I do mine once a year after winter break. I use Puriclean and after introducing into fresh water tank pull it through the taps and leave in waste tank for a while.

 

[M-J]

I do mine once a year after winter break. I use Puriclean and after introducing into fresh water tank pull it through the taps and leave in waste tank for a while.

+1

 

[StillGoing]

I use white vinegar to descale the hot and cold water system. You can get 5l containers of it from Amazon.

 

[BouncyBoatFolk]

Citric acid, use for all the pipework, tanks, and boiler. Do it in the spring, rinse through well, then good to go for the season. Occasionally, I retreat the cold storage tank as I have noted on frequent inspections there's quite often a brown residue in the bottom of the tank.
Mike.

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[treblid]

I use white vinegar to descale the hot and cold water system

Citric acid, use for all the pipework, tanks, and boiler

I thought acid based products should never be used in boilers?