Alage?

[Kasakato]

On my filter intake/out put and hearter there is a lot of brown stuff. On the heater there is also a few green spots. What this and how do I take the off?

 

[Jchillin]

They are different types of algae (the brown stuff is diatoms). You will have to remove it manually. Do you have any bottom dwellers? If not, you should consider having one or two. Pleco (green) and otos (diatoms) gobble this stuff up. I would also suggest reducing the amount of time your aquarium lights are on.

 

[Drake]

Is this tank a fresh, brackish or marine? Because some heaters are not made to handle the salt in a marine or brackish tank and get green spots on them.