Black Dots And Dead Looning Plats?

[Juber]

My live plats look like they are dying, they have got patches of black on them, however also noticed my rocks in the tank are also very black looking?? I think its dirt, but whats causing so much build up? i do the 10% clean up every sunday

Any ideas guys ?

 

[Juber]

Any one???

I noticed today also that theres alot of build up of dirt or algee stuck on my glass?? Its weird?

can any one please advise?

 

[Colin_T]

regarding the black stuff, does it wipe off easily and float around in pieces or sheets?
If so it is blue green algae (Cyanobacter bacteria). This grows in tanks with lots of nutrients and low oxygen levels. The easiest way to get rid of it is to do more frequent water changes and gravel cleans. Also reduce the feeding, particularly of dry foods like flake. And increase water movement around the tank.

10% water changes each week might be enough but you should check the nitrates in the tank. If they are going up rapidly each week then do bigger water changes to dilute the nitrates. I usually recommend 30% each week.