well i got both
the algaecide is called Knock out and over a period of a few days the algae gets all clumped up and yes it works. i add 3 drops per litre . and the stuff will last years. esp a litre of concentrated algaecide. instructions say 175ml per 10,000 gallons . it's pool algaecide so it's perfectly safe for all kinds of materials . won't stain or desolve any washers or rubbers . im sure it's also safe to swim in (>_<) . the other is super algyzine . it's wat u put after u have killed the algae . it's the prevention stuff . i usually mix a batch with the knock out to make sure thre's no algae . let it sit for a few days . strain it with a filter . and then add in the super algyzine (one drop) to prevent algae . very potent stuff .
so after talking to the "poolguy", knock out contains copper 5% of it . it's wat causes the algae not to grow . so how come i was gettign the green slime even when i got 2 waterblocks and a copper radiator? i have no clue . (the copper is present as sulphur pentahydrate)
the super algyzine is poly [(oxyethelene dimethyliminio)ethylene- (dimethyliminio) ethylene dichloride) 30% and controls most of the black greenish algae .
case anyone wants to look all that up . the algaecide that u find in most pet shops aren't concentrated . they are supposed to control a little algae since fish and the environment it lives in need it . i have read a lot about eh iodine , chlorine bleach etc etc . i think the algecide is the safest way to go . i wouldn't want to find a leek anywhere . good luck