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Results 1 to 6 of 6

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  1. Default HC/dwarf baby tear light reqs


    0 Not allowed!
    I have read all sorts of ranges for this plant, and I can't get a definitive answer. I am not trying to carpet with it, I just want it to maintain its bright green color.

    Tank is a 36g bow front. Currently I'm running the aquaticlife T5HO fixture with 24W 6500k and 24W 650nm light I have also received mixed reviews on the 650nm in a separate thread, but based on everything I read despite its low visual appearance the wavelength is perfect for plant growth.
    Additionally I have another T5 dual fixture with 2 x 6,700K 18W (sub-par but its on there for extra-light)

    So my "watts per gallon" is around 2.3 right now, but I've been told that is very much a general rule and when HO lights are involved sometimes things get different.

    My stem plants, grass etc all doing great. HC is starting to dull in color and turn slightly yellow/brownish. It's currently attached to driftwood not in the substrate. I am dosing with flourish excel basically daily.

    One thing to note is that I am currently cycling the tank but I was told this would have no effect (the nitrites are through the roof right now). Also the temp is ~84 degrees. I am wondering if this is the problem because the light isn't exactly low. Any thoughts?

  2. Default


    0 Not allowed!
    Plants generally don't mind the heat, but cooler temps are better. I keep some plants growing in the window and the water temps are in the 50s... no problems.

    How far is the light from the HC? This will give us an idea of how much PAR is actually getting to the plants.

    You might need CO2 to keep the HC alive, I haven't read about anyone having great success with HC without either pressurized CO2 supplementation or a liquid carbon supplement.

  3. Default


    0 Not allowed!
    Quote Originally Posted by homemadepopcorn
    Plants generally don't mind the heat, but cooler temps are better. I keep some plants growing in the window and the water temps are in the 50s... no problems.

    How far is the light from the HC? This will give us an idea of how much PAR is actually getting to the plants.

    You might need CO2 to keep the HC alive, I haven't read about anyone having great success with HC without either pressurized CO2 supplementation or a liquid carbon supplement.
    distance from plant to light is about 17 - 19 inches (one is slightly elevated)

    I have been dosing with Flourish excel (liquid carbon supplement) daily, currently have no plans for a pressurized CO2 system just simply due to cost and space but I didn't think it was an absolute requirement for this plant.

  4. Default


    0 Not allowed!
    I've never done HC myself so I can't tell you how it grows without CO2, but those who have been successful have used it. Do you have any other fertilizers going into the tank besides excel? There are other vital nutrients which the plants need and aren't getting based on your current regime.

    17-19 inches is a pretty decent distance from the light so I'll guesstimate that you have medium light at that area. Its very difficult to tell how much light actually hits the plants without a proper PAR meter; I've always tried to have more than enough light for the plants I wanted to grow. I'm thinking that you'll need some more as well. Instead of having multiple fixtures, you may want to consider getting a single, powerful unit, especially for something like HC.
    Last edited by homemadepopcorn; 01-23-2013 at 03:57 AM.

  5. #5

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    0 Not allowed!
    High nitrites are not good for plants - I get it under 2 ppm.

  6. Default


    0 Not allowed!
    Quote Originally Posted by Cermet
    High nitrites are not good for plants - I get it under 2 ppm.
    Yeah this morning's levels are off the API chart. Hopefully they drop before much more damage is done. Even if the distance actually makes that medium light the HC should be alright from what I hear, it might just be impossible to keep without pressurized co2 injection.

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