Steradent To Purify Water?

[I-K-E]

Give it a go to try and sort out the dose to use.

I'm building a sand filter for long term and have severalbought filters, like the army ones, and bleach tablets as well.

would be interested in plans for a sand filter

must have a look. I know that there are 3 types used on a large scale but only one of those dosen't need chemicals etc