[Waterbug]

As i have read thru the forums and read all your comments on water additives i would like to give you my status on this so far, and would like comments of other with similar setups:

Swiftech Mcw462 UH CPU block, DD Heathercore, Clearflex60, Hydor L30 pump, Acryl 5,25 bay tank, The watercooling contains about 2 litres in total, Antec 1000amg window case.

Im using the litres measurement as i live in sweden.

I use battericarwater, 4 litres, brand (Hagmans), mixed with a bottle of D-tek supercool additive. A couple of weeks ago i spotted algee buildup in my plexiglass baytank i alsa have a plexiglass side on the pc case, so light would get in there pretty easy.

I added 12% of concentrated glykol antifreezer (Ethylene glykol), brand (Preem) and it made it worse, im now getting some white bacterial fungus groups in the tank, i did not have this before i added the glykol antifreezer.

I read somewhere that bleech would kill the bacteria, so i used what i had, Clorine 5% strong, and i put 5ml of the stuff in the 2L of water, in the tank, it reacted with the fungus and killed it. Now im worried about the corrosion stuff that i have read about when using clorine. So what would be the best brew/solution to use in a closed loop? I do no live in the US so we do not have lysol , pinosol, GM Antifreezer nor Hyperlube or Swiftech Hydrx. Only D-tek Supercool, Pupleice, WaterWetter and antifreezer non Ethylene / Ethylene stuff.

Any suggestions, from you people in Europe or other parts of the world?
And could anyone explain to me why the ethylene antifreezer made it worse???
I thought it was poisonious.