Question I have is "does FW kill pods on contact?". If not, it seems to best way to maximize pods release from the ATS is to use FW (small amount, 1-2 cups) and rinse it down the screen over a 5G bucket that contains saltwater. Maybe the short exposure to FW will just stun them to release and they will survive once they hit the SW below. I have no idea if that is possible, just tossing out the idea to discuss.
In the case of small tanks/mandarins, you could do the same thing directly over the tank, just be like topping off but with lots of pods to go with it.