Treating the water tank

[Kelpie]

We've generally used Milton for this in the past, and currently using some chlorine tablets. But we've not seen anything similar for sale for a while now and starting to run low.
I've seen chlorine for swimming pools for sale- could this be used, at a suitable dosage?

 

[andrewAB]

I use this Puriclean Powder Water Cleaner And Purifier - Fox's Chandlery

 

[Momac]

I use nothing but tap water.
But sterilising solution seems to be readily available in the UK

 

[TSailors]

IMHO it should be safe to use Chlorine tablets meant for pools too, in the correct dosage of course.
Ozone is suppose to be "healthier" for humans, however I am unaware of any such devices for boat tanks.
Oh.. google helped:

 

[Kelpie]

I should probably have mentioned that I'm not in the UK, I'm in the Caribbean.

 

[Tranona]

Pure bleach (not the perfumed variety) will be fine. Milton is essentially bleach.

 

[Yngmar]

We've used supermarket bleach (sodium hypochlorite, concentration was stated on the label), make sure it's not perfumed or mixed with other additives though. We tried tabs for a while, but they leave crumbly bits in the tank as whatever the chlorine is bound with in them didn't fully dissolve.