Hi thanks for the replies.
I can see how it would be very diluted in the dam, good point.
Totally agree with the mulching I'll attach some pics. The area so far, is about 3 acres. I actually do have the chips, lots of pine harvesting has gone on. That was my full intention. However that is a slow process years and years. So whilst I will do that intermittently, we have been seeing green manure everywhere. So far about 2 acres is done. Much less time consuming! We have green now! Perhaps instead of worm tea. Compost tea in the totes? I do spray out seaweed tea currently.
Also a few days ago I came across an awesome permie farm in NZ I'm going to contact them. They had feed bags full of compost brewing in a small pond, much smaller than ours. Let out a plug and it flowed down channels to the fruit trees. They had lived in South America. Cant remember the native peoples they learnt from. Will have to rewatch again.
I am trying to create systems with the least amount of effort, I guess like all permies.
Will update on if we go ahead or not. A combination is what I'm leaning towards now. Thanks again!