Hi, sometime lurker first time poster.
My 110 litre tank has been set up (this time) for a year. It's planted, lit with two flouros (both sunglos) on 10 hours a day, has a yeast type CO2 set up and is populated by 18 various small tetras, a pair of bolivian rams, three baby bristlenose and 4 peppered corys. In the last three or four months a blue green slimey algae is creeping all over the tank. I've been running phosphate remover in the filter for 6 weeks, phosphate, ammonia, nitrite and nitrate are all 0 and still it grows, I siphon huge amounts out twice a week with a water change and within three days it's spread everywhere again. I've stopped feeding plant food.
I've been keeping tropicals for years and have never had this. Help! there must be something wrong but I don't know what it is.