ok i work at a petco...i know, i know
we have been open since october, and i clean the SW
tanks every week, but i am only alowed to change 20% of the water. each coloum of tanks is connected to a sump w/ small skimmer and UV
, along with mechanical and carbon filtration.
we are developing a black slime problem, on the glass, on the LR
, of the decor, on the substrate...
ammonia = 0
nitrite = 0
nitrate = 10
phosphate = 0
what can i do? i am not alowed to change the filtration or change out more water, and assuming it is photosynthetic the lights are on 12+ hours a day...
any advice is helpfull.... even if there is nothing i can do with my limitations!