Thanks again everyone. I'm in a process of upgrading to a 100g tank so I'll make a tank thread once I have the glass. By modified flash I meant it's triggered by a cheap transmitters (forgot the company nut they are pocket wizards knock-offs) and the gels I'm experimenting with came with a Rosco sampler (they fit my sb-800 flash head perfectly). I usually choose one in the dark blue color. Hope that helps.