I had a really bad experience with Tankmatez. First trap they sent leaked like the proverbial sieve. Not surprising since I later earned they are shipping prototypes, not a finished mass-production product. They offered to send a “free” replacement for which I got billed $25.00 shipping. I found that, after 3 weeks, the fish would not go near the new trap. Long story short: I got my money back, but I had to go public on FB and debate the owners. It’s a promising design, but by no means perfected (IMO). And their customer service needs serious attention.