I've improvised a narrower tube about 1" in diameter to use as an attachment to suck stuff off the bottom. The smaller diameter slows the suction somewhat - its just not as powerful. No danger of fish getting sucked in, even small ones. It seems easier to focus on the muck on the bottom -instead of it sucking up a lot of the good water too. The down side is its easier clogged than the 2" diameter, so I use a skimmer first to get out the bigger stuff.

Just sharing some info, not suggesting you go the way I did. 'couple years ago, decided to buy a blower/vac as a means of removing CPB (potato beetles) from my potato plants. They'd developed an immunity to all (at that time) dusts and similar traditional remedies. Worked fine in the Vac mode, not only sucked the little --------- up, but the grinder made short work of them. Since this was an experiment, didn't want to spend a lot on it. Discovered that Amazon sells reconditioned Ryobi units with a year warranty pretty cheap. Ordered the ZR08510, don't recall what I paid, but it wasn't much. Having now found a better CPB remedy, the Ryobi just sits in the barn and I start it occasionally to blow out the barn and my brother borrows it every fall for a couple of weeks to blow leaves off his patio, under the carport, etc. It's been almost 3 years and it works fine. Just some info. Ev Here is a link that might be useful: reconditioned ryobi

I had an old used Electrolux canister that I absolutely loved. The pros were-it was great,it picked up everything in its path,the attachments worked very well. . The cons-it was somewhat heavy to drag around, and the hose kept getting clogged. I finally got sick of the clogs and replaced it with-in order, a Hoover upright bagless, a Eureka upright rated a "BestBuy" by Consumer Reports, and my current Bissell Grab and Go convertible. I have hated every one of the replacements, they "suck" or rather, don't suck at cleaning. I have considered both a Dyson and another Electrolux/Aerus . Someone else must have the answer. What is the best vacuum?

This may be overkill but I have it and use it as a mini shop vac, it can pick up sawdust etc and the wand is a great feature. Black & Decker FHV1200 Here is a link that might be useful: Black & Decker FHV1200