Weak stems, deficiency of some type??
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Old 01-09-2013, 03:36 AM   #1
sketch804
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Weak stems, deficiency of some type??


Well I have recently started having a problem with one stem in particular, but a few that will do the same to a degree. The stem in question is Hygro. Lancea which when grown right will have a very hard stem but now my stems break easily and are very weak. I have the same problem with Rotala sp 'red' also. Everything else in my tank and even those plants look pretty healthy as far as I can see, no other deficiencies around but these I haven't the slightest clue. If you want to see current pix, check last page of my 40 breeder journal.

So my tank is as follows:
~40 breeder
~4x 54w T-5 HO lights (6700kx2, 10000k, pink plant light) plus 36" T-8 (10,000K)
~CO2 injected via in-line reactor, and I am pretty much at the threshold of how high I can go.
~I do modified EI dosing so to speak (KH2PO4, KNO3, millers microplex mixed with flourish comp. and extra iron, and I add 1 tablespoon or so of GH booster)
~PO4 is 2ppm or higher, Nitrates are 8ppm but probably a lot higher, low KH and GH.

anything else just ask, but anyone have any thoughts or solutions??

Thanks all!
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Old 01-10-2013, 05:45 PM   #2
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bump..still looking for any insight towards this problem. Thnx!
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Old 01-10-2013, 05:56 PM   #3
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Do you use root tab? I didn't see in your journal tank spec. Is the bottom leaves of the plants curling up or falls off easy? Do you have a close up pictures of the plants? Didn't see any from your journal either.
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Old 01-14-2013, 04:13 AM   #4
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Do you use root tab? I didn't see in your journal tank spec. Is the bottom leaves of the plants curling up or falls off easy? Do you have a close up pictures of the plants? Didn't see any from your journal either.
Yes, I use osmocot2 pills, but it is time to plant some more tomorrow. Some leaves do fall easily but it is usually only when the stems get crowded, h. Lancea will only keep leaves but so low no matter what it seems. I don't believe I have any up close pix right now other than what's on my journal, once I find my camera again I will try to post some, but colors, leaves, growth, etc.. all seem to be normal, this weak stem seems to be the only problem I have at the moment.

Last edited by sketch804; 01-14-2013 at 04:14 AM.. Reason: clarification
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Old 01-14-2013, 07:08 PM   #5
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Yes, I use osmocot2 pills, but it is time to plant some more tomorrow. Some leaves do fall easily but it is usually only when the stems get crowded, h. Lancea will only keep leaves but so low no matter what it seems. I don't believe I have any up close pix right now other than what's on my journal, once I find my camera again I will try to post some, but colors, leaves, growth, etc.. all seem to be normal, this weak stem seems to be the only problem I have at the moment.
Sounds like it is not getting enough co2 and nutrient from your flow. Since all your plants in your tank are healthy. I would experiment by moving one of the stem to the front with no other plant is blocking it to see if it will be more robust. If it is, then you know your problem.
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Old 01-14-2013, 08:16 PM   #6
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Not to get off topic but isn't than an insane amount of light? Do you have any problem running that much? What photoperiod do you use and how high are the lights from the substrate?
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Old 01-15-2013, 01:25 AM   #7
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Originally Posted by n00dl3 View Post
Sounds like it is not getting enough co2 and nutrient from your flow. Since all your plants in your tank are healthy. I would experiment by moving one of the stem to the front with no other plant is blocking it to see if it will be more robust. If it is, then you know your problem.
CO2 huh? I do believe I might need to cut a few good things out the way of my flow, you are probably right. But I will tell ya, my CO2 is at the limit, anymore and my fish are gasping. Great idea on the second one, I did add one stem of the H. Lancea to my corner on the left that gets good flow, so we will see. I appreciate the advice N00dl3.

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Not to get off topic but isn't than an insane amount of light? Do you have any problem running that much? What photoperiod do you use and how high are the lights from the substrate?
Ha, well I could actually use more light, I am about to get another fixture in the near future to replace my large one. And really truth be told I just recently added an LED strip for more . But as long as I can balance, CO2, light, and nutrients then I get pretty little algae besides some GDA on my glass and sometimes plants. My lights are 16+" or so from my soil, photo period, well I have 2x54w bulbs on for 9hrs, 2x54w, LED white strip, and 36" T-8 on for 6 1/2hrs or so. Also one last thing is my 4x54w T-5HO light hangs off the side of the tank so I can grow tropical plants in the winter. Now if I ran out of CO2 I would be screwed and grow SSOO much algae under those lights.

Last edited by sketch804; 01-15-2013 at 01:48 AM.. Reason: adding
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Old 01-15-2013, 12:26 PM   #8
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CO2 huh? I do believe I might need to cut a few good things out the way of my flow, you are probably right. But I will tell ya, my CO2 is at the limit, anymore and my fish are gasping. Great idea on the second one, I did add one stem of the H. Lancea to my corner on the left that gets good flow, so we will see. I appreciate the advice N00dl3.
I think your co2 level is fine. It is the co2 and nutrients distribution/flow that you're having problem with. The best way around that is move your power head around to ensure you're maximizing the distribution of co2 and nutrients to all your plants.
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