I have very little algea in the tank, but recently I've seen some of those
long, nasty disgusting aglea-strings that looks like a long human hair on
some of the plants. They can be removed by simply pulling them out, but it
seems useless to even try to get them all. Now to my question; Does anyone
know if this perticular type of algea is caused by phosfates (have no test
for that) or anything else inperticulat that I CAN adjust, such as
lighting
or fertilizer. Or is there a critter that'll eat the stuff?

For herbivores, depends on what kind of specific hair algae you have, I've
seen "hair algaes" that the standard crew love and some stuff they won't
touch (cladaphora sp.). Anyhow, all bad algae can usually be overcome by
keeping CO2 levels good and the proper ratios of NO3 PO4 K and traces... it
will at least stunt it, you can remove the rest by hand and never see it
again. Anyhow, most important is usually CO2. btw- the tables relate KH,
not GH to pH so be sure you're measuring the right thing. As for proper
nutrient ratios and what not, check out:
http://www.sfbaaps.com/reference/barr_02_01.shtml

and learn about the balancing act. Usually, you can safely be a little high
on anything provided everything else is okay.

Cheers,
Jeff Ludwig