New Warre keeper here....I installed 1-1/2 packages in each of my two-box hives this past Saturday (May 11th) and did my first inspections yesterday...I was very surprised to see that at 5 days, both hives had drained the hive-top feeders (WarreStore) which had 3 qts in each at install...they were bone dry !...such gluttons...Anyway, they have already drawn down about 60% comb in the top boxes and approx. 25% in the bottom boxes.. I have been a little concerned from reading other posts that bottom boxes often are difficult to get the bees to move down to. So I guess I should feel a lucky so far. My question is when should I think about placing a third box on each hive and should it be nadired ? I have a beekeeper mentor (albeit with Langstoth hives) that suggested when the top box gets 60% capped, then go ahead and add the 3rd box. Any ideas or suggestions ?