I just purchased a transfer pump from
wayne pumps. It comes with an low water suction attachment. I have not used the pump yet (arrived yesterday) but with the new attachments that I put on
aqueon water changer I will unscrew the gravel vac portion of the vacuum and attach it to the transfer pump and vacuum the bottom while pumping out the water. I don't know if the pump will have enough power to attach a sprinkle but I'm sure you would be able to water garden or plants. Here is a link to the transfer pump and there is a
video on the web showing the put used for
aquarium water changes.
http://www.farmandfleet.com/products...l#.UT0O91cRurA , this pump comes in 12v or 115v. I have not tried the pump yet but I do believe that it will work. I was searching for a way to change water quicker without wasting water and this is what I came up with.
Well I just used this set-up tonight and it work great. I did water changes in a 150, 75, and 55 in 1.5hr and usually takes around 3hrs to do these. The pump worked great as a gravel vac as well as a pump. If this is in your budget, I would really consider purchasing this pump to do your water changes. It is a time saver and water saver.