Hello All,
Ok so i have had these "stains" on my tank for a few weeks now, my tank is 160L and is around 6 months old, my lights on on for around 12 hours a day, i use a fluval 205 external filter, i thought to begin with that these stains were brown algae, but now i am not so sure.... they are very hard to rub off, i have to use a lot of force with a cleaning pad to remove them, and they come back within a few days, i have a few plants in the tank and various fish including an orange spotted plec, gourami, neon tetra, 2 mollies and 3 shrimp, 1 of the shrimp has lots of green eggs inside her, i began to think these stains, some of them green, could be the eggs? but then why are they all over the sides of the tank? anyway i have taken a few photos to show the marks, any help greatly appreciated
Ok so i have had these "stains" on my tank for a few weeks now, my tank is 160L and is around 6 months old, my lights on on for around 12 hours a day, i use a fluval 205 external filter, i thought to begin with that these stains were brown algae, but now i am not so sure.... they are very hard to rub off, i have to use a lot of force with a cleaning pad to remove them, and they come back within a few days, i have a few plants in the tank and various fish including an orange spotted plec, gourami, neon tetra, 2 mollies and 3 shrimp, 1 of the shrimp has lots of green eggs inside her, i began to think these stains, some of them green, could be the eggs? but then why are they all over the sides of the tank? anyway i have taken a few photos to show the marks, any help greatly appreciated








