well, i figure i might as well show you all the algae grow out tank. i have figured out that if i flip the algae mat over every few days it forms it forms a more uniform, tightly knit sheet. it also causes it to form layers which can be separated. if i peel one layer away from the other, i can put them side by side and double the size of the mat in relatively short time. it shouldn't be hard to keep growing the algae mats.
a frontal view of the small 5 gallon tank i grow it in:
over head view of the mat:
this pic is just to show how i have used it so far. i cut it with a pair of scissors into a thin strip. you can also see the layers in the strip.