I have got a black hairy growth on the tips of my plants, how can I get rid of it and what is it? The plants are about 6 months old and this is the first time I have had it.
the nitrate readings are around 20, the lighting is unchanged that came with the tank a juwel rio 240.
the nitrate readings are around 20, the lighting is unchanged that came with the tank a juwel rio 240.