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Brown unhealthy plants in low tech

Emyr

Member
Joined
20 Jul 2011
Messages
343
Location
London
My low-tech 30l CRS cube has been set-up for about 2 months now and is fully cycled with 20 CRS shrimp. A lot of the leaves are covered in what looks like brown / diatom algae. Seem to be a lot of mixed messages about how to cure (as with all things planted tanks). Could this be from not enough light?

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I'm using remineralized RO water
No CO2
Temp: 23c
Nitrates: Around 10ppm
Ammonia and nitrite: 0
Lighting: 6h from a Twinstar LED at 50% intensity
GH: Around 6
KH: 0-3
Dosing: Half a squirt of tropica specialised once a week (1ml)

Any advice or remedial suggestions very much appreciated.
 
Last edited:

Deli Aquatics

New Member
Joined
6 Feb 2021
Messages
4
Location
Maryland
Honestly the only thing your missing to this awesome setup is some co2. That would probably fix your issue or... more water changes. I do about 2 50% water changed every week on my tanks that dont have co2.
 

Sweded

Member
Joined
1 Jan 2016
Messages
46
Location
Stockholm
Generally lowering light intensity and keeping the tank and filter clean is beneficial. Plant some limnophila sessiliflora to outcompete the algae.
Get 3 otocinclus to eat this algae. Avoid ancistrus because they can go after plants a lot more aggressively and they are too big for a 30l.
 

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