Troubleshooting
Red Cabomba problems — and how to fix them
Red Cabomba (Cabomba furcata) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Loss of red colour
Caused by insufficient light, hard/alkaline water, or low iron; increase PAR, acidify water, and supplement iron to 0.1-0.2 ppm.
Rapid deterioration and melting
Most commonly from hard or alkaline water; test GH and pH — this species is very intolerant of water above GH 8 or pH 7.
Shedding leaves at purchase
Transition stress from different water parameters; acclimate slowly over 2-4 weeks by gradually adjusting pH and hardness.
Stem rot at planting point
Plant stems shallowly (2-3 cm), ensuring no leaves are buried; improve water circulation near the substrate.
Algae outcompeting growth
In a balanced high-tech tank with CO2 and strong lighting, healthy growth outcompetes algae; address any deficiency that slows growth.
Prevent red cabomba problems before they start
Most red cabomba issues are care-mismatch, not bad luck. Dial in the basics:
Red Cabomba problems — FAQ
Why is my red cabomba loss of red colour?
Caused by insufficient light, hard/alkaline water, or low iron; increase PAR, acidify water, and supplement iron to 0.1-0.2 ppm.
Why is my red cabomba rapid deterioration and melting?
Most commonly from hard or alkaline water; test GH and pH — this species is very intolerant of water above GH 8 or pH 7.
Why is my red cabomba shedding leaves at purchase?
Transition stress from different water parameters; acclimate slowly over 2-4 weeks by gradually adjusting pH and hardness.
Why is my red cabomba stem rot at planting point?
Plant stems shallowly (2-3 cm), ensuring no leaves are buried; improve water circulation near the substrate.
Why is my red cabomba algae outcompeting growth?
In a balanced high-tech tank with CO2 and strong lighting, healthy growth outcompetes algae; address any deficiency that slows growth.