I feel that many times, aquarist get a hold of a paper and think it has direct meaning.

"Oh look, this supports my contention!" when it does not really, it might suggest it, and it is worth discussing for our applications. I've not read any papers that had really anything we could truly use and I have plenty of controls that can be add to show they have little if any effect in our tanks, so it's dubious at best from what I can tell and observe.

Test wells vs real in situ effects are quite different.
Diana Walstad presented a nice table in her book on the chemicals and targeted organisms but the table did not tell intensity, what effect/mechanism of action, the concentrational dose (something extremely important in chemical control of any pest!! It's all about the dose!) but to a lay person it seems like strong evidence that allelopathy is likely.

Regards,
Tom Barr