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Help! :( Green short fuzz algae (photos) and GDA.

Mike87

New Member
Joined
7 Feb 2022
Messages
24
Location
Poland
The problem is on limnophilia aromatica and some other plants...like on Althernanthera mini. Anyone can identify what is the cause?
CO2 30 from inline diffuser,
No3 5, K 15, Ca 40, Mg 10, Fe 0,1, PO4 Daily 0.25ppm.
9h light 39W power led + 30w chihiros but only at 30% so like 50W
Eheim skim 350, fluval 207 +Matrix.
Did not add No3 due to got always 5-10 from fish. Using RO water + Mineralizer.

There is also green dust algae on Glass (See Photo) otocincluses tried to help and are doing great job but GDA is winning.

Some Plants at the Photo are trimmed and planted again so there are some empty spaces at the scenery.
IMG_20220330_122636.jpg
 

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Last edited:

Hanuman

Member
Joined
4 Jan 2019
Messages
1,730
Location
Thailand
How old is this tank? How is CO2 diffused? How do you know you have 30ppm of CO2?
lt might also be good to have a clearer picture of how the water is flowing in the tank.

GDA and hair algae can appear early on in the tank's life or later too if CO2 and nutrients are off. Usually not enough of either. My guts tells me the problem is your flow / CO2. It might be easier to evaluate if you showed us how the water is flowing in the tank.
 

palcente

Member
Joined
26 May 2021
Messages
74
Location
Kent
It will be hard to help you because you are doing something weird. Just park your assumptions for now, dim the light a bit, turn up the co2 if possible and start dosing regular EI that you know works out of the box. Then see what happens. If it is still bad, at least you know it is 100% not because of your dosing.
 

Nick potts

Member
Joined
25 Sep 2014
Messages
964
Location
Torbay
I would start by reducing your lighting, even if not the problem it will slow down algae growth.

What size is your tank?
 

Mike87

New Member
Thread starter
Joined
7 Feb 2022
Messages
24
Location
Poland
120liters tank.
I think the low Po4 and Fe could be the problem... Fe always under 0.1 in test, Daily dose of 0.03 could be too small, same with Po4 0.25 Daily.
 

mickfzu

New Member
Joined
26 Jan 2022
Messages
20
Location
France
120liters tank.
I think the low Po4 and Fe could be the problem... Fe always under 0.1 in test, Daily dose of 0.03 could be too small, same with Po4 0.25 Daily.
Hi Mike, is your tank better since the last time?
 

rixo2010

New Member
Joined
5 Oct 2022
Messages
10
Location
Germany
Hi @Mike87
it would be a great help for people having the same issues, to know how you fixed it and to know what was the cause.
 
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