I was wondering......

Is it necessary to use hydrochloric acid or sulfuric acid when making a bleach solution? I'm not a chemist and am very reluctant to try mixing these. Is there such a thing as a pre-mixed bleach that can be used for bromoil, or is there another recipe that is a bit safer? I have an Ohaus triple gram (?) scale for mixing dry chemistry, but the acid scares me a bit.

I love the look of bromoils and would really like to try it.

Also, what is the recommendation for exhaust systems? I manage to get along with out it while using selenium/sepia split toning in an 'open' basement without too much trouble and am wondering if there is an issue when mixing bromoil bleach.

Thanks in advance.......

Dorothy