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How much K are my plants consuming.

1091 Views 5 Replies 5 Participants Last post by  PhotoJon01, 
P
Attached are some pictures I took today of my plants which I believe have a K deficiency (deficiency circled in red). I am running a 47 gallon tall tank with 2 watts/gallon. I dosed my tank to 7.57 ppm (1/2tsp) K on 8/16 under that advice to keep it near 10ppm for a non-CO2 tank.

However, over the past day my Hygro Coryambosa has developed a significant amount of pinholes in old leaves and has withered new leaves. Is this a K deficiency? Should I be feeding more K?

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E
Haha, sucks that your posts haven't been replied to.

I personally haven't dealt with potassium deficiencies, so I can't help you there, but let's see if bumping your post back to the top will get some replies.

Good luck
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mistergreen
so this is a low tech tank?
lower your lights..(wattage and or photoperiod).. that'll help. List your other params like N, P, Mg, Ca, micros, and subtrate too.
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Z
Aren't you suppose to dose macro nutrients every other day? Which would mean dose pottassium every other day?
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cah925
I have the same problem, I just figured it was my snails.
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P
I thought the every other day dosing was for high-light tanks and for those who choose to go with the EI method. I am not going to go with the EI method at this time, though I will consider it again once I find out my water parameters once I add the CO2.

My present water parameters:
NO3: 15 ppm (I usually only rarely have to dose to keep this at 10-20)
PO4: 1-2 ppm (Usually stays at 1 or .5; I did dose this a week ago because it dropped a little below .5)
K: See above
Excel: 5 ml daily
Trace: 3 ml every 5 days
Fe: Unsure if I should add this to the routine... I have added it once when I noticed some yellowing of the leaves. It reduced the yellowing significantly.

All other parameters are 0. PH is around 7.0-7.2. KH I think was 3 and GH was 11 or so.
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