what causes pinholes in leaves?

Grabbing a pin and stabbing your plants will also cause pinholes.
 
Yay for potassium deficiency....

did it look like this?

DSC07477.jpg


DSC07488.jpg


DSC07476.jpg
 
now i think it's something else lol

the holes are nowhere as circular as the ones in the pic

i'll take a pic tomorrow morning, camera out of batteries right now
 
potassium or snails.

they're not always round or show any brown or yellowing.
 
Don't want to hijack the thread - I think this is on-topic.

This is some sort of sword I bought six weeks ago. Its been growing about a leaf a week. The leaf on the left with holes is new growth; the ragged one on the right is original (the plant was a bit battered when I got it). I have also removed a couple of leaves with extensive yellowing and browning - there is a little of that on a leaf in the centre.

DSCF1067.JPG

Can anyone make a diagnosis? and maybe ID species?

(BTW, that photo of the java fern was helpful - mine used to look like that. I now dose macro nutrients, but not traces.)

DSCF1067.JPG
 
Don't want to hijack the thread - I think this is on-topic.

This is some sort of sword I bought six weeks ago. Its been growing about a leaf a week. The leaf on the left with holes is new growth; the ragged one on the right is original (the plant was a bit battered when I got it). I have also removed a couple of leaves with extensive yellowing and browning - there is a little of that on a leaf in the centre.

View attachment 103510

Can anyone make a diagnosis? and maybe ID species?

(BTW, that photo of the java fern was helpful - mine used to look like that. I now dose macro nutrients, but not traces.)

Echindorus Bleheri. Looks like it needs some root tabs or Nitrates.
 
And to think I always gave the credit for the pinholes in my plants to the bazillion MTS in my tank... go figure. That picture was amazing and I have saved it to my computer for future reference.
 
Just for reference, I saw that pic at Aquatic Plant Central back in June of this year. It has been posted here before, the original was by a person with the moniker of Zapins. I too have kept it to refer to when anything unusual shows up. Thanks to the author and good luck.
 
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