Brown, Green And Purple Patches

[e2tky]

I recently discover lots of brown, green and purple patches on my tank..

Which is healthy?

How can i reduce it ?

thanx

[Achilles Tang]

Hi, if you can't describe it well... how about you post a photo?

[e2tky]

sorry .. i cant post a photo...

i also not sure how to discribe it..

hope someone can help..

[seamonkee]

Sounds like cyano bacteria to me....

[ai[k²]wan]

brown i think is diatoms?

green hair algae and whatever green algae,

purple might be cyano, since u mentioned brown algae those, coralline wont appear so readily unless its in pro's tank like our fav AT

[ai[k²]wan]

try to scratch ur purple algae, if its hard to scratch off, its coralline, good, looks nice, the other case, its cyano which is bad

[killfire]

I have all three growing in my tank at the moment. The brown ones, which are diatoms in my case can be removed easily with a sponge pad. the red ones (cyanobacteria) with a syphon. The green ones re-appear the fastest after cleaning...and seem to be the most difficult ones to remove.

I have tried to control their growth and spread by adding turbo snails (which took out the brown ones on the rock and glass) and shortening the photoperiod to 10hrs (which seem to be working in keeping both brown and red algae in check)...

Have noticed a small (green bean size) patch of coralline algae growing on the side panel of my tank... is it possible to scrap it off the glass and transfer it to a rock? will it work that way?

[shiraz]

does your purple algae look like this?

[shiraz]

does your green algae look like the one on the glass or on the rock?

[shiraz]

or maybe ur brown algae looks like this... on your sandbed?

[Tanky®]

Hi,

From e above ..

which are good alge that we can leave in e tank

and which are the bad one?

[ai[k²]wan]

all of the above are not to be left in tank, only cyano is harmful, the rest can bo chap

[Tanky®]

how does cyano looks like....

[shiraz]

the 1st pic i posted... the purple wavy thing on the sand..

[Tanky®]

purple not wavy

is it coralline?

or how i looks like

alot

[shiraz]

ya the one u see on the rock... purple one... thats coraline..

[Tanky®]

alot