Hey Bit ... Well, the 'thought' is always more daunting than the actually DOing it!!!! I, too, am going to move the lettuce growing into another area for the end of May forward where it may be cooler.
I use any vegetable seed starter mix and mix it about 50/50 with leftover potting soil. I have seen it done in Spagnum Moss!!! Whatever is cheap!!!
Since you place the peatpots in the neck and then don't move them at all...they and the roots swell up rather well and don't 'disintegrate'. However, try moving them and it's a disaster (falling into the jug!!!). Bob has drilled the holes too large and I have made shims out of old chopsticks or popsicle sticks or sticks from the yard and wrapped them with duct tape.!!!
