I read the Martin's webpage on glowing algae and tried the "secret ingredient" as well

. I did get something that looked like an algae bloom, the water turned green and the rocks were covered by a thin green layer. However, I find it odd that the layer of comes off when I touch the rock, it wasn't slimey at all and quite smelly.
I also had a container with just fertilizer, the rock had small algae growth.
The only fertilizer I had available was my wife's orchid fertilizer, I'm not sure if its safe though to grow algae for fish, can anyone confirmed that for me?