Lack of Something... - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 04-14-2009, 01:30 AM Thread Starter
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Lack of Something...

Some deficiencies have shown up lately and I would appreciate it if I could get some advice before I take another wrong step.

These are the new leaves on the Indian Red Sword.
I think its a calcium deficiency because the leaf edges are curled in. The leaf on the left really shouldn't be curled down like that either.
they are also quite pale and almost transparent.



These are a couple of the older leaves on the Hygrophila corymbosa.
There are pinpoint holes and some decay of the surrounding tissue.
My guess is lack of potassium.



Yellow tissue around expanding holes in a sword leaf.


I think that last one is a potassium issue too.


Thanks for any hints or corrections you can give.
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post #2 of 3 (permalink) Old 04-14-2009, 01:43 AM
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Are you presently dosing any GH booster? If not, I suggest adding some at your next water change, about an eighth of a teaspoon per ten gallons.

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post #3 of 3 (permalink) Old 04-14-2009, 04:34 AM
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Most deficiencies that distort plant leaves are CO2 deficiencies. Low CO2 in relation to the amount of light, therefore the growth rate, will cause several different distortions in various leaves. You can dose Equilibrium to get a few degrees of GH and eliminate calcium and magnesium as possible deficiencies. Then dose KNO3 and KH2PO4 in EI recommended dosages, and you eliminate any possible potassium, nitrate or phosphate deficiencies. If the leaves are still growing distorted, you can almost be sure you have a shortage of carbon for the plants - CO2, in other words.

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