My top fin gravel vac just came apart and doesn't siphon anymore as was doing a pwc on my 30 and 20, my 55 gallons water change is on Tuesday, this is the third time that I've had a top fin fall apart so looking for new brand and recommendations, I would like one with a flexible hose the topfins was so stiff I had issues with it, also I don't know what size tube the one I had was really big maybe 4" tube I could go to petsmart and get the one I need but I don't want top fin, I found a python with squeeze bulb on amazon for 7 dollars it says medium but they get you with the shipping had a 6' hose, this is silly that I'm asking for advice on this but tired of paying $25.00 for something that breaks every 4 months.