I am struggling with some hair algae, as I have posted in this thread:
Its been one week since that post, seems like the hair algae still dont want to go away. I am still not aware of the cause, but when I was observing the limnophila today, it seemed like some kind of nutrient deficiency - the yellowing/darkening on the older leaves seem to indicate that. Any ideas what kind of deficiency it might be?
Tank parameters (copied from the other thread)
1.5 years old
ADA amazonia substrate
200 L
filter: Oase Biomaster 600 thermo - loaded with 4L of seachem matrix and 200ml of seachem purigen
Eheim skimmer for added flow and surface agitation
Chihiros wrgb2 slim set currently at 68/31/40 (r/g/b)
Lights are on from 12:00 till 18:30
CO2 injection enabled from 8:15 till 18:30, controlled by a PH controller aiming for 1 PH drop (7,6-7,7 in the morning, target PH is set to 6,5) - this has been added a month ago, previously its pretty likely that I had low levels of CO2
CO2 is injected via an inline atomizer
Fertilization using dry salts / EI, adding 16ppm NO3, 16ppm K, 2ppm PO4, 0,5 ppm FE + micros weekly
Also added some root tabs a month ago
Water parameters:
Temperature around 24 C
KH 4
GH 7
Water changes@50% 1-2x per week
Crew:
4 keyhole cichlids
4 gold mollys
10 rasboras
~6 nerite snails
~3 otocinclus
Plants:
Its been one week since that post, seems like the hair algae still dont want to go away. I am still not aware of the cause, but when I was observing the limnophila today, it seemed like some kind of nutrient deficiency - the yellowing/darkening on the older leaves seem to indicate that. Any ideas what kind of deficiency it might be?
Tank parameters (copied from the other thread)
1.5 years old
ADA amazonia substrate
200 L
filter: Oase Biomaster 600 thermo - loaded with 4L of seachem matrix and 200ml of seachem purigen
Eheim skimmer for added flow and surface agitation
Chihiros wrgb2 slim set currently at 68/31/40 (r/g/b)
Lights are on from 12:00 till 18:30
CO2 injection enabled from 8:15 till 18:30, controlled by a PH controller aiming for 1 PH drop (7,6-7,7 in the morning, target PH is set to 6,5) - this has been added a month ago, previously its pretty likely that I had low levels of CO2
CO2 is injected via an inline atomizer
Fertilization using dry salts / EI, adding 16ppm NO3, 16ppm K, 2ppm PO4, 0,5 ppm FE + micros weekly
Also added some root tabs a month ago
Water parameters:
Temperature around 24 C
KH 4
GH 7
Water changes@50% 1-2x per week
Crew:
4 keyhole cichlids
4 gold mollys
10 rasboras
~6 nerite snails
~3 otocinclus
Plants:
- echinodorus - doing generally ok, but the oldest/biggest leaves seem to get hair algae after some time
- cryptocorynes - similar as echinodorus, new leaves looking fine, but the older ones are infected with hair algae, so I keep removing them
- vallisneria
- limnophila sessiliflora - this one helps a lot with the plant mass, it grows quickly even when the conditions are suboptimal during summer
- rotala bonsai - this has been added about a month ago, seems to be unable to establish itself, it keeps rotting in the bottom and then the upper part floats up. i keep replanting these upper parts but seems like its happening again and again
- hydrocotyle tripartita - added about a month ago as well, so far its not doing very well
- ludwigia sp. white - added about a month ago, this one is causing me a lot of headaches, its a beautiful plant, and seemed to be doing great, but the hair algae is slowly starting to grow on this one as well
- eleocharis - added a month ago, seems to be doing ok, new side shoots are starting to appear
- Alternanthera reineckii - added a month ago, seems to be doing ok, even if some leaves have holes in it(probably hungry fish), and a few leaves start to have hair algae
