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Question: Holes in Carolina Cobamba - Mainly at the bottom

Discussion in 'Are you new to aquatic plants? Start here' started by Monilovesplants, Aug 17, 2013.

  1. Monilovesplants

    Monilovesplants Prolific Poster

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    So I'm getting holes and wondering, I know I've upped my fertilizers but I'm thinking, if I'm getting holes is that mostly a potassium deficiency? If yes, would it be a good idea to increase that a bit and replant my plants and watch the new leaves. I know the old leaves are not fixable but I'm guessing I just have to watch and see if it gets worse. My plants are looking better but still getting some weak leaves on these.

    Monica
     
  2. Solcielo lawrencia

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    It's probably a K deficiency. The amount of K in KNO3 isn't enough. Are you adding K2SO4?
     
  3. Tug

    Tug Lifetime Charter Member
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    It could also be a CO2 deficiency. Are you adding KH2PO4?
    FWIW, I add about 1ppm of K+ to my tank in addition to EI dosing.
    If you're dosing KNO3 and KH2PO4 you shouldn't need much K+.
    Did you ever find out what you are using to soften your water?
    What do you mean by weak leaves?

    Plant Deficiency Checklist + Diagram
    http://infographics.myaquacalc.com/wp-content/uploads/2010/11/plant-deficiency-labeled2.jpg
     
  4. Monilovesplants

    Monilovesplants Prolific Poster

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    Under-dosing maybe?

    I do Potassium Sulfate 3/4 of a teaspoon 3X a week. I add 1 tsp of phosphate once a week.

    Would that be enough or am I seriously underdosing on both? I've got powdered versions of both so can add it dry. Right now the amount I'm dosing is dry.

    I also added 1 tsp of calcium and 3 tsp of magnesium (epson salts) when I do water changes due to the water system.

    Monica
     
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