Don't know if this is related - have asked our local ADA guys before and they have said any ADA product can be brought it. Just that if it's not popular or cannot generate enough sales, then chances are, you won't see it in the market. Basic business sense I guess.

Have also read in APC this dude who put a white cardboard behind his tank leaning at the top and with a light source at the bottom. Creates a gradient. He changes the light colour to suit his needs. Only thing is, the gradient direction wont change. Hope I make sense LOL

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The nose runs and the feet smell - go figure
Steven