Ok right thanks are diatoms rough in nature while feeling them? Also how can I differentiate brown algae and diatomsIf it's a newly planted tank it's most likely Diatoms and can be easily brushed off and siphoned up or if you get a nerite they should make quick work of it. Manual removal is usually best as to not stunt any plant growth.
Otocinclus catfish are amazing algae cleaners. I put 6 in my 10 gal. Every surface in my tank had algae and in 2 weeks it is spotless. Nerites help too. But, watch out for them eggs.Hey guys I have a planted tank where I saw some brown algae like substance in some Of the leaves of my plants placed in the front region was wondering whether I brush it off and remove with a siphon or the problem is very serious and I must remove the plant asap