I am thinking of setting up a waterfall chain to include a double pass to a higher CPM ad network with the second pass set at a lower floor. The reasoning behind this is that in optimizing ask/floor prices I have noticed that there are different floor tiers within an ad network. If you set your floor too low some advertisers won't bid on the traffic. Example: Network1(high floor)-->Network1(lower floor)-->Network2-->Network3 Does anyone have experience with a similar setup? Is this likely to upset the ad network?