I will do this....
I will NOT have an top airtrap. This is because of Cova's very good explanation, on how to get the air out and into the res.
I WILL use 1/2 inch hoses....silicone....its easier for me
I will TRY to seal the res. as good as I can because, if the systems leaks at a higher point all the water will come down to the res. and overflow if I dont do it.
I now have a feeling of......"This will work".......
And a very good tip you shared with me there bigben. To mix the addictive later on, when Im done with taking the air out.
OK.....you have ALL been VERY friendly....I really have no reward or something

The only thing i could do, is to tell how to hole thing performs when it is installed.
I will use Distilled water with very little addictive/glow.... any objections ?
(Sorry for the awful spelling )