The Planted Tank Forum - View Single Post - HC DSM Plants browning and slow growth
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post #9 of (permalink) Old 12-09-2012, 09:26 AM
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foxfish's Avatar
Join Date: Nov 2007
Location: Channel Islands England
Posts: 187
I am not sure what you are doing wrong but I have never had any problems growing HC immersed, if it helps you this is how I do it....

No water at all above the substrate, completely covered top with cling film or a tight fitting lid, 12 hours of moderate light, heat mat under tank, no misting, no opening the top.
Works every time for me, I use ADA substrate but have used others with success.
The very best results I have had was when I grew a tank of HC outside in the summer, the tank was in the shade of a tree but, we get 18 hours of light mid summer & the temp is around 25c.

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