Here's a shot of my lowly half barrel pond I set up around May to placate myself while I save for a serious in-the-ground pond. It contains two amazon swords pulled from my 38 gal & poyted in fluorite (I'm hoping to get them to grow emerse--they've started), amazon frogbit (l. laevigatum), azolla moss, duckweed, water hycinth, water lettuce, one gi-normous jungle val about 7' long (also pulled from the 3
, a growing number of mosquito fish given out free by LA county, and pond snails. The potted marginal is marsilea crenata, which I'm hoping to get to grow submerse in my 38.
I got the barrel from Lowe's Home Improvment store for $17, but didn't spring for the liner for another $20- just filled & emptied it repeatedly once a week for a month, added water hyacinth and ran a power head rigged to a bag full of charcoal for a month, until the musty whiskey smell was no longer detectable. After about 5 weeks I added two guinea pig mosquito fish, and when they made it, I threw in the rest. The repeated soaking of the wood caused it to expand to the point where it's water tight.
The barrel holds about 25-30 gallons. I top off 2-3 times a week with straight water from the hose and have never done a water change. The floating plants are so packed in now I'm giving them away to co-workers. I've found l. laevigatium so crammed that it actually sent up aerial leaves similar to the way hycinth does, rather than them just floating waterlily-style. The laevigatum also has roots about 14" long.
The other little pot is a ceramic one with a wine bottle cork in the drainage hole. It contains l. lavigatum, an unknown floater, parrot's feather, duckweed, variegated society garlic, red-stem taro, and an unidentified lily--and snails.
Anyway, I'm glad AB has a pond forum, and thanks for including container gardens!