Hello all, Have followed YachtForums for a long time, only recently registered. Evaluating next boat purchase. The Marquis 59 is very interesting to us, but still wrestling with a couple of questions. First question regards black water holding tank. Appears to be two 40 gallon holding tanks. Have only had experience with a single holding tank. How does the two tank setup work on the 59 Marquis? Do all vaccuflush units go to either tank? are specific heads designated to a specific tank? When you pump out - are there two tanks to empty? Second question is related to power. There are two 50 amp cables for shore power. Looks like the AC panel is split into line 1 and line 2. If you only have 1 cable plugged in, can you run either side of the AC panel (as long as total amperage is managed)? Thank you in advance.