Purple slimey stuff

[Leeb343]

Hi all I have some kind of purple algae slime on my rocks it's now spreading on my corals and sand any idea on how to get rid of this as I clean the rocks it's back on them in a couple of days all my water tests are spot on oh my tank is 4 months old. Thanks

[HovaRockz]

Cyano bacteria....if your test results are coming out perfect and you also test phosphates and that comes out fine then more then likely it's the lack of flow

[melosu58]

We also have an article about it in our SW articles section.

[Leeb343]

Nice but I have a real powerful powerhead is there anything I could buy to get rid of it thanks

[HovaRockz]

How many you have and what size is your tank?

[Leeb343]

I only have one and its very big the tank is only 160 litre

[HovaRockz]

Well it might be big but your flow might not be flowing through out the whole tank which can be the cause of your cyano you might want to follow that link to the thread above

[HovaRockz]

I've seen many threads in sw that will definitely help as melosu58 mentioned...in my opinion your 1 power head isn't enough (just saying)

[Pryzz]

Originally Posted by Leeb343

I only have one and its very big the tank is only 160 litre

I have a 160 litre tank and I have 3 power heads. 2 adjustable 5000 LPG and one 6000 lph.