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What deficiency is causing this? Potassium?

Zeus.

Fertz Calc Meister
Joined
1 Oct 2016
Messages
4,604
Location
Yorkshire,UK
Do you have Amano shrimp? think a can see one in pic. My Amanos got a taste for quite few of my plants esp
  • Bolbitis Heuelotii
  • Alternanthera reineckii 'Mini'
They would strip the Alternanthera reineckii down really fast and the Bolbitis Heuelotii was little more resilient.
 

tyler138

Member
Thread starter
Joined
16 Sep 2020
Messages
28
Location
Bristol
Do you have Amano shrimp? think a can see one in pic. My Amanos got a taste for quite few of my plants esp
  • Bolbitis Heuelotii
  • Alternanthera reineckii 'Mini'
They would strip the Alternanthera reineckii down really fast and the Bolbitis Heuelotii was little more resilient.
Yes, have a couple in the tank. Not sure it's them, but will keep an eye out for them.
 

Matti

Member
Joined
12 Aug 2021
Messages
85
Location
Helsinki, Finland
I have been struggling with holes in my ferns and crypts for a while. Not sure if it's the RCS eating them or just a deficiency. Also any s repens leaves just go very quickly.

Could the holes be caused by a potassium deficiency or something else?

Thanks
Most likely potassium. Lack of potassium is very easy to notice especially on hygrophila, which easily get holes.
I have a 55 l tank and I dose dose 6ml Premium weekly and 10ml JBL proscape N (nitrogen and potassium), no signs of any defiency.
 
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