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Black patches on Java Ferns

Just for closure I thought I would update. Whilst lowering lights didn't hurt, it didn't help either. And I don't have control of light in one of my tanks, which is almost entirely daylight-driven during the summer. However I'm happy to say - no - shout: I AM NOW SUCCESSFULLY GROWING JAVA FERNS!

Playing with ferts has sorted me out. I'm reasonably convinced that it was dialing up the potassium that has made the difference (as recommended by a number of forum regulars). However I would caveat that I've substantially changed my overall fert dosing regime as one of the many outcomes of the legendary lean dosing thread, so I also have a lot less N than I used to as well, and I'm using urea in two of my tanks.

Cheers,
Simon
 
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