Next time rather than cut the bag off, you should try just burying when whole thing. It works great, and you don't rip any roots apart.
Looking forward to your pool grow.
Eh Alien..
a little late now, but maybe for the future.
I believe they make this "construction barrier" plastic netting in WHITE which can sometimes be found at major nurseries before winter time. I believe they use them for tossing over bushes/shrubs to prevent the weight of the snow from mangling them.
Not sure if it'd matter since they'll ultimately be overgrown by plants, but might be a bit easier on the eyes..
They also make Smart Pots now that are called the "transplanter" or something. They are pre-sliced, but in an overlapping fashion to where they stay together/no media falls out.
Uniseal Hole Size Chart
Uniseal for 1/2" pipe (UNISEAL-0050) = 1.25 Hole Saw
Uniseal for 3/4" pipe (UNISEAL-0075) = 1.25 Hole Saw
Uniseal for 1" pipe (UNISEAL-0100) = 1.75 Hole Saw
Uniseal for 1.25" pipe (UNISEAL-0125) = 2.00 Hole Saw
Uniseal for 1.5" pipe (UNISEAL-0150) = 2.50 Hole Saw
Uniseal for 2" pipe (UNISEAL-0200) = 3.00 Hole Saw
Uniseal for 3" pipe (UNISEAL-0300) = 4.00 Hole Saw