Minimum depth for Wanda Whale/Diver Dave/AquaBug

[spica]

I've recently looked into the Wanda Whale/Dave/Aquabug cleaner from Hayward and have heard good reviews as an AG pool cleaner, but I cannot find information relating to the minimum operating water depth. I have an above ground pool with steel framing. The water is only filled to a level of about 20" for my 3.5 year old. I would never leave him swimming alone though. Does anyone have an idea of the minimum depth, or even just the height of the product itself ? I'm also thinking that adding a 90 degree hose connector would aid the cleaner in lower water depths. Other cleaner recommendations are also welcome, but not robotic cleaners. I'm looking into a low cost (and low labour) solution.

[Watermom]

I have Wanda the Whale and am happy with it. The unit is probably about 8-9 inches tall? You would probably need the 90 degree connector or else the unit will probably just tip over. (It still may with the connector anyways but not sure.)

[spica]

It's much smaller than I imagined. It seems the hose that plugs into the unit does not rotate/swivel, which is necessary for the operation/turning of the unit (see end of http://www.ehow.com/video_4428886_wa...ale-hoses.html). Adding a 90 degree connector would be fine with unit with a swivel hose, but probably not with Wanda. Currently, its very quick for me to get setup for manual vacuuming. Can I leave Wanda in the water for prolonged periods ? Will the hoses curl leaving it in the water or only if they are stored dry curled ? The reason I ask, is if I have to connect hoses and throw Wanda in the water every time, I could have almost manually vacuumed the pool. I just installed a 16" sand filter, and oh boy, it makes a huge difference not having to vacuum up what I've just vacuumed. The intex filter/pump seemed to have worked the first season, but now it's useless (even with new filters). I suspect the lid does not seal with the filter anymore.

Thanks,
N

14'x48" Intex cheapie with only 1500gal, Intex swg, 120sqft of solar power