stuff

Hello, I came to my tank yesterday and there was a strange brown thing on the inside of the tank glass, I had noticed it a few days ago but it was really small so I thought nothing of it but by yesterday it had grown to almost triple the size, so today I cleaned the tank out and used a sponge to...

Hey Peeps, I have a 375 Gallon Tank with currently: 9 big goldfish 1 baby silver arowana 3 baby motoro stingrays 6 medium discus All living happily ^^ I have a 5x2x1 sump for this tank with overkill amounts of bio balls, marine pure and purigen. However, the water is always hazy. It is not...