Recent content by nish

my plants in my tank have developed a black fur on the leaves i treated this with allgen killer this seemed to have worked but the fur has come back can anyone tell me what it is ,how to prevent it and how to get rid of it for good :good:

we have had r tank set up for nearly a year everythimg was fine then all the plants started to get a black fur on them we took them out did a fifty percent water change added some algen killer bought new plants they were fine for a couple of weeks now they have started to go black too . does...