“Advised looking at pondguru's YouTube videos that other renowned German brand was poor plastic build quality and would easily break, so chose this also German Tetratec. It's better build quality and cheaper. Pumps a heck of a lot of water. Only concern is if water extracted from tank loses pipe and sucks air instead, it will displace all the water from the filter, around 2 buckets back to the tank causing a huge flood very quickly. Same for all external filters, but a worry.”
