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Green Spot Algae, Anubias Nana Petite

Lee Sweeting

Member
Joined
7 Jul 2013
Messages
677
Hi! I have recently noticed that my Anubias has got some green spot algae on the older leaves. The new growth seems to be unaffected. I was hoping someone could tell me why the is happening, and offer some pointers on how to solve this issue.

My co2 injection is good, all the other plants in the tank are unaffected, and are pearling as usual, as is the anubias. My gas comes on three hours before lights on and i am able to depress the pH by one unit before lights on. My ph remains stable through out the photo period.

I'm also dosing EI as per Clive's tutorial.

I have a 125 ltr tank, with two 28w T5's (using reflectors) for a period of 7 hours.

I'm also turning over 10 x the volume of the tank each hour. I'm using a spray bar along the length of the back glass. My flow and distribution seem to be very good.

Any suggestions would be very welcome.

Thanks,

Lee.
 

sa80mark

Member
Joined
2 Oct 2007
Messages
859
Location
Leicester
From my all be it limited experience if you dont wipe the leafs quite regularly you will get algae on them pretty much whatever the light is, a simple test is to wipe the leaf gently and see how slimy/sticky/grimy it is then give it a proper clean, it should almost feel rough to the touch, Anubias leafs build up the slime layer very fast ( atleast in my tank) so I wipe mine 3 times a week

Hth

Mark
 

ceg4048

Expert/Global Moderator
UKAPS Team
Joined
11 Jul 2007
Messages
9,453
Location
Chicago, USA
Lee,
Slower growing anubias are really susceptible to GSA, so it's best to keep them shaded, or just remove the older affected leaves.

Cheers,
 

frothhelmet

Member
Joined
1 Mar 2010
Messages
425
Location
Oxford
The only thing I have ever found to remove GSA is a nerite. So I would recommend one. When you see it, keep placing it in a spot with GSA. You will be glad you did.
 

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