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I'm an old school photographer with a hand held sekonic light meter with a spot meter. Could I with a 18% grey card get a spot reading that could be converted somehow to PAR? I would also possibly risk the light meter by sealing it in a ziplock and get a submerged reading. Either way, is this...

I need to return an aquaray lighting controller, But I no longer have the packaging. I was hoping that maybe somebody out there might have just bought one, and would be willing to part with the packaging to help me out? SKU#:5027656500734 Cheers R Sent from my iPad using Tapatalk HD

I currently have a twin grobeam on my tank with an aquaray lighting controller. Would it be possible to use a splitter to run both lights off one channel, thus freeing the second channel to control a blue led strip light? If so where might I find the splitter cables to do this (1.7mm x 4.0mm)...

So I was thinking about getting these... http://www.ebay.co.uk/itm/10-PCX-CREE-G ... 08400?var= I have a heavily planted tank. 80x40x30 24.7 gallons. In order to reach the desired LSI of 30 I need roughly 11,160.45 of lumen power. With 10 of these Cree gu10's I will have roughly 9000 Or a...