HC substrate - The Planted Tank Forum
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post #1 of 19 (permalink) Old 04-07-2014, 06:56 AM Thread Starter
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HC substrate

bit of a noob here, forgive me, but I've been trying to grow an emersed hc carpet in my 20 long, and i'm struggling. it's a dirted tank with miracle grow eco and a sand cap, plenty of light, and it's misted a few times a day, but after three weeks, no signs of growth. I've been debating starting over with a more normal substrate. is there one that people seem to like for HC?
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post #2 of 19 (permalink) Old 04-07-2014, 01:50 PM
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Do you cover the tank with any clear plastic wrap at all?


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post #3 of 19 (permalink) Old 04-07-2014, 04:03 PM
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Need to have plastic wrap over the top, i had my CO2 in tank before water and would turn it on few times a day when lights were on to get co2 levels up under the plastic wrap.


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post #4 of 19 (permalink) Old 04-07-2014, 04:45 PM Thread Starter
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the tank has been all wrapped up nicely, plenty of condensation on the glass and plastic wrap.
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post #5 of 19 (permalink) Old 04-07-2014, 05:19 PM
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I would leave the back corners just ever so slightly cracked open and air the tank out once a week for like 30 min and then spray down again and rewrap.


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post #6 of 19 (permalink) Old 04-07-2014, 06:24 PM
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I wouldn't cover it at all. If it's truly emergent, then it wouldn't matter how moist the air is. Also, air circulation is important, as well as a fertile substrate. It doesn't seem like it's fertilized based on your descriptions or there may be too little substrate flow so nutrients aren't being transported to the roots.
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post #7 of 19 (permalink) Old 04-08-2014, 12:29 AM
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I would keep it wrapped. I've grown HC emerged successfully and found the best method was to cover it well, with rich substrate (aquasoil) and plenty of light. I just started a DS about two weeks ago and the HC is growing well, lots of growth and tons of new shoots. It might be the roots are not able to get to the MG through the sand cap. What kind of light are you using?

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post #8 of 19 (permalink) Old 04-08-2014, 02:03 PM
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Quote:
Originally Posted by exv152 View Post
I would keep it wrapped. I've grown HC emerged successfully and found the best method was to cover it well, with rich substrate (aquasoil) and plenty of light. I just started a DS about two weeks ago and the HC is growing well, lots of growth and tons of new shoots. It might be the roots are not able to get to the MG through the sand cap. What kind of light are you using?
I was thinking the same thing. I've never seen HC successfully grown with the DSM using a substrate capped by sand...sand is pretty much glass and highly reflective I would assume. That could definitely be a bad thing. I've never used a sand capped media for DSM, so I don't have any story of personal success or failure, but perhaps someone who has, could chime in on that particular part of it.


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post #9 of 19 (permalink) Old 04-08-2014, 03:31 PM Thread Starter
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Ended up totally redoing the tank yesterday. I replaced the miracle grow with Flourite, and I'll squirt it with a water/liquid fert mixture a few times a day. We'll see how this goes.
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post #10 of 19 (permalink) Old 04-08-2014, 03:41 PM
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Is it still capped with sand?


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post #11 of 19 (permalink) Old 04-09-2014, 05:48 AM Thread Starter
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the flourite isn't capped, no.
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post #12 of 19 (permalink) Old 04-09-2014, 07:03 AM
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Sand is definately the best substrate for hc to grow on as long as there's nutrient rich substrate underneath,Hc will spread way faster in sand because it roots better in sand same with all the other carpet plants, I won't put a small carpet plant in a tank unless there's sand as the cap, And the first layers you had(dirt and eco capped with sand) is one of the best layered substrates there is for this, But I see you changed it up?fluorite is a good one to but i would cap the fluorite with fluorite black sand(preferrably) or black diomand.

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post #13 of 19 (permalink) Old 04-09-2014, 03:19 PM
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Instead of hearsay, I figured this is something that could be of proof and use in your trial.

http://fishtankprojects.com/aquascap...tears-dsm.html


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post #14 of 19 (permalink) Old 04-09-2014, 04:24 PM
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Yes do what that link says but use sand instead of the stratum if u want it to spread quicker,stratum is just meh lol

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post #15 of 19 (permalink) Old 04-10-2014, 12:34 AM Thread Starter
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Already spent the money on the standard stuff, and really don't feel like dropping another $30 on another bag of sand. The HC is planted in individual stems, but a bit sparse for what I'd like, so we'll see how it goes.
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