hi cybermeez
it's on ebay here too. nice design

it's a pity the screws for wine-bottles are to small. may be I can find an old-fashioned one or one we had in our hotel as fixed-station for bottle opening
as I couldn't get the plastik-clamp once shown on loaches (JBL had one; a similar one is sold now in marine aquaristic shops in germany, but not here?) I decided for the short and cheep way: just a piece of a bar of stainless steel. that's it. makes 25 pieces, one for each hillstream tank.
gives me the idea to bend it for better recovering in the tank
cheers charles