Algae Problem

[Incitic]

Looks alot blue-er in real life. Not sure if its just because of the woods colour.

I expected this type of algae to go away with age but the tank has been set up this way for about two months now.

Havent got a picture of the thread as its too small (mainly grows on riccia) and we all know what green spot looks like.


5gal
16 watts
co2 fairly steady at 30ppm
ph 6.3
kh 2
no3 7
I do 40% water changes every week.

Plants
Anubias, Java Fern and Riccia (around 50% planted coverage). Am dosing sera Florena once a week.

Could anybody help me here? I dont want this to take hold. Cheers.

 

[paulf]

Can you check if its BGA? have a look on this site
If it is, is there much current in the tank in that area? I had a shellie tank a while ago and there wasn't a great deal of water movement and that was half the problem.
If it is BGA, what I would do is a 50% water change followed by a 3 day black out, then another 50% water change and add 15ppm of nitrates before the black out (if using nitrates)

 

[Incitic]

Id say it would be spot then. I have a HOB filter and it seems to grow pretty slowly this type.

I was wondering if I get could some advice as Im putting it down to a chemical inbalance.

 

[zig]

If its green spot algae dose more phosphate this usually cures it, you dont give a reading for phosphate so impossible to tell your levels right now, aim for between 1-3ppm po4, keep your nitrate in check also its a bit on the low side at 7 ppm somwhere between 10-20 pm no3 is good.