Do you have a refugium? You could probably just get some chaeto from somebody else's tank. Dosing phyto seems to help me with reestablishing pod populations.
You're way far away or I'd offer you some of mine (both phyto and cheato). I am sure you have somebody closer.
Advantage of regular sump pods is that they're not just snack (like tigger pods) but actually will continue to thrive in your tank.