Clean water tanks

Miltons. Or fill with clean water and add about 100ml of household bleach. then drain and rinse.

I've done my van's tanks using the powder for cleaning plastic homebrew bottles. Half a bottle in each tank,fill and let stand for a day or two. Drain and refill.

1ml of household bleach per litre of tank capacity. 70 litre tank, 70ml of bleach, etc. Pour the bleach in, fill the tank, run all taps and pumps to get the treated water through the system. Leave for 6 hours then flush and refill.

I also store the van with tanks full (of fresh water, not the above).

Any of the marine shops will supply you with products specificaly for cleaning drinking water tanks.

Bleach may seem to be a good idea, and it may knock down the initial smell & taste...and it indeed may knock down any growing allge or fungus...but bleach does not kill spores.

For a single non branded product, citric acid may be more effective and leave less lingering smell & taste.


What ever you use, its a good idea to take the van fro a drive arround the block.....over some speed bums will be good, to slosh the contents arround.......otherwise no cleaning at all will occur on the roof of the tank.
The sloshing will also help dislodge any particulate material adhering the the inside of the tank

cheers

I found green algae growing in my clear plastic undervan hoses. After the chlorine treatment, algae died, sloughed off and disabled the check valve under sink. You might check this out before leaving home. I had to dismantle all clear plastic hoses. I wrapped them in black plastic and have had no trouble since. Regards, marty.