I have a batch of eggs arriving Thursday so I decided to try something new(to me anyway) to hatch the eggs since my last attempt had ishues with algie buildup in the critter keeper im thinking I didn't have enuf flow inside the box, so based off of the egg tumblers being used here http://montereybayaquarium.tumblr.c...better-bubbler-how-do-you-incubate-cuttlefish I put this incubator togeather with a small 92gph pump from harborfreight , some plastic mesh screem from a craft store, a 90*elbow from a rodi unit and the old critter keeper. the pump has an elbow pointing straight up and the screen forms sloping sides and bottom so i can adjust the pump for a gentle flow or turn it up enuf to tumble the eggs and keep them moving. the pump also has a magnet from an old kyrolia pump glued to it to help mount the whole thing in the corner of the tank. ill probably glue a small piece of acrylic at a 45*angle in the opposite corner from the pump to help direct the water flow if i decide to go with the tumbler option but im not shure if that's the way to go or not. what do the cuttle breeders think? tumble the eggs or let them sit suspended on the screen with gentle water flow all around?