Thanks guys for the input,

I've been adding ferts through the the excess water at the bottom rather than a mister as I'd be wary of burning the plants with ferts being sprayed directly on leaves. I know this is a problem for fertilizing garden plants, and seeing as these are being grown emmersed, I worry about the same problem.

As for the filling, I think I am going to half fill with same temp water, and then heat the water from there, adding the additional plants the next day. This should give minimal time for algae growth while still allowing me to plant and not melt my plants.

Also, I would think it'd be important to start CO2 injection when I submerse my plants so that they don't melt due to lack of CO2 either.

Sound like a decent idea?

I hope I don't mess this up. =/

Mike