I don't trust chlorine in my drinking water, tanks, or anywhere else... it belongs in pools and for bleaching white clothes only! I myself would NEVER put any chlorine tablets or chlorine drops of any kind into my fresh water holding tanks... I flush them out frequently with filtered fresh water and have never had the slime or bacterial growth... as long as the incoming water supply is filtered of any particulates and most of the phosphates (food for bacteria and slime) there will be no algal slime or nasties... been doing this for marine aquariums most my life... only other pure water supply is reverse osmosis and that is not doable on our boats... huge energy/water waste... Chlorine is really not good for your health as I said... can't post the link due to my posting privilage but here is a good read:
internethealthlibrary DOT com/Environmental-Health/Chlorine-and-cancer DOT htm
Sorry guy but most USA municipal water systems are dosed with Chlorine... clorox is a cheap, efficient and highly effective way to keep the 'bio-burden' in water to a reasonable level.
Reverse Osmosis is NOT a guarantee for 'purity water' 1. the membranes cant be validated for their 'integrity' and have MANY manufacturing defects routinely in their surface. 2. bacteria is collected by those membranes ... mostly with 'cracks'.
Before USA water came under the control of the 'sanitarians', the average lifespan was 45 y/o. Fully 1/3 of the deaths in third world countries are caused by water borne parasitic diseases. The US municipal water system is NOT as you 'think' it is ... many deaths have been reported recently due to chlorine resistant pathogens ... and not all the US systems have been 'corrected' since those outbreaks.
and here's the simplest kicker for you ... do you even know what ÁM filter and what required removal efficiency at that ÁM rating to use to remove 'bacteria'? .... hint: you cant buy them at a West Marine or a Home Depot !!!!!