[Roger Miller]

My guess is that it isn't a deficiency at all. It looks to me like mechanical damage. My guess is that the leaves were rasped by one of more of your L-numbers. If they are mostly shy and/or nocturnal then you may never see it happen.


Roger MIller

 

[Roger Miller]

I've tried using algae wafers to keep plecos off plants and had only moderate success. I have much better success using blanched zucchini.


Roger Miller