Wruyle,
The substrate is 100% Fluorite. You can see how the 10,000Kelvin bulb that is on the right renders the colors cooler. The Fluorite looks different in the left side of the tank compared to the right side. The camera exagerates that effect, in reality the difference is small.
Pisces,
The palm-like plants on the right are Eichornia diversifolia (stargrass I guess). Beautiful plant but sensitive to N or P deficiencies and to shipping.
--Nikolay
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