Black spots on Anubias and Java fern leaves.

[scorpio]

Anubias and Java fern leaves in tank having a lot of black spots. How can I remove it.

[Tom Barr]

Generally a CO2 issue, it has nothing to do with EI.

I've raised and sold more Java fern as a hobbyists than most over the years, Anubias as well.

Neither plant is demanding as far nutrients, but low light and good CO2 make them grow very nicely.

Regards,
Tom Barr

[jonny_ftm]

+1

Over one year keeping anubia and java fern, since following Tom advices on CO2, I have no longer to prune leaves because of black spots and I have no issues on them. Just shade them also with floating plants if needed

[scottward]

+1

co2.

[TheKillHaa]

if, after having a good co2 the fern leaves still black, then increase 5ppm your dose of K.

regards.

[Biollante]

+1

CO2 then K

Biollante

[candsautoservice]

hello what you mean K ?? YOU MEAN POTASIOUM ??
i have the same problem for 3 months now
THANKS

[barbarossa4122]

Yes, K is potassium.

[dutchy]

+1

low CO2 in combination with high light.

regards,
dutchy