Red Slime = cyano bacteria. This question comes up every week (it's a common problem). If you search the archives you'll find tones of articles on how to get rid of it
HI I HAVE JUST BOUGHT A NEW SKIMMER FOR MY
10 X 3 X 2 SET UP A TURBO FLOATER 5000 TWIN
MADE BY AQUA MEDIC
QUESTION IS IT POSSABILE TO OVER SKIM A TANK
MY OTHER QUESTION IS ALGAE RELATED
I HAVE THIS RED BUBBLE TYPE ALGAE ALL OVER THE PLACE ITS A RIGHT PEST AT FIRST IT LOOKS O.K UNTIL THE SPREADS EVERYWHERE.
ANY SUGESTIONS OF HOW TO GET RID OF IT