[turtlehead]

I don't know if it's a shrimp watse, plant def or algae. it's just little brown spots.

 

[trenac]

It's hard to say... does it rub off? If so then it is most than likely algae. If not then most than likely a deficiancy. I doubt that it is shrimp waste.

 

[turtlehead]

I can't tell if it's rubbing off.

 

[turtlehead]

brown algae is easily gone with higher lighting, which I am purchasing soon, but if its a plant dfe, I don't know what it is.

 

[freshreef]

riccia is easy and fast grower plant. for riccia to get brown algae its either u have very low light or really really wrong fert dosage.