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This helped, I got the manual and looked through it closely. I definitely have three "Ballast Puppies" in my system. I've got the 750# bags and all the fittings ordered.

Thanks to everyone who...

Thanks Ed. I search all the hose on mine and couldn't for the life of me find the size printed anywhere.

I tried to check mine when I looked at the pumps, but there were no markings on them to note the size. Looking at it without removing it from any fittings, I was going to guess 3/4" or 1". I'll give...

Confirmed it tonight. I definitely have three jabsco ballast puppies just inside my port side transom.

mikenehrkorn: do you know what size the stock tubing/black-plumbing is? I'm going to take...

mikenehrkorn, thanks for the response.

Do you have the 750 lb (20"x20"x50") bags? If so, what kind of fill times are you seeing? I can deal with 10-12 minutes, but anything over 15 minutes when...

First question for everyone; I believe my boat came with the Gravity III ballast system, can someone confirm that?

Next one, and frankly the bigger question (no pun intended); I am upgrading to...