JBL Aqua In-Out: The adapters that come with it don't fit on the faucet in the kitchen or the one in the bathroom. Neither do they fit on the bathtub faucet. Where can I get the right adapters?
Unfortunately, I can't provide information on where you can find a suitable adapter in your area. All I can recommend is trying a conventional bathroom fittings shop.
JBL Aqua In-Out stopcock: Sometimes there is no suction at the drain. What might be the cause?
It is impossible to determine why there is too little suction in a specific case by remote diagnosis. Factors such as the water pressure of the water mains, length of hose and whether there are any clogs in the system my be involved.
The suction is needed
a) when the Aqua In-Out is started up
b) permanently when the drain is higher than the water level in the tank.