Jennifer V Posted August 27, 2021 Share Posted August 27, 2021 I think my java fern and anubias might be showing signs of a potassium deficiency. The java fern is turning black in some areas and the anubias has some tiny holes in both old and new growth. I'm not the best photographer but photos attached. It's a 5g tank and I dose one pump of Easy Green once a week. I read that java ferns can suck up nutrients pretty quickly. Should I start adding something like seachem potassium or dose more Easy Green? Link to comment Share on other sites More sharing options...
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