How to get rid of duckweed. The challenge of the century. Here is a tutorial to show you my favorite way to defeat the immortal plant scourge itself: duckweed. This is not a title misdirect and I will not be telling you to "use a net" during this video (others should be sent to KZfaq purgatory for saying that alone is a solution to duckweed in videos).
My hands are calloused and my arms are sinewy from years of scooping out duckweed but it is time to release myself from that which binds me. Allow me to show you the way as I blaze a path ridding 27 fish tanks from the clutches of aquarium glitter.
Some say he's still fighting duckweed till this day. Get your duckweed here: brentonsfish.com/products/duc...
*UPDATE 1*
1) Running powerheads on timers are a great way to ease the workout on the fish, 1.5 to 3 hours a day is enough to affect duckweed
2) I recommend an air pump (long air stone) to assist for the few days that follow, if you depend on the powerhead only it takes a really long time for it to demolish that last bit of duckweed
2) Shrimp will hide in the powerheads that are off, they will not make it if when timer turns on, you can tap the powerhead to get them out before the powerhead turns on
3) Be cautious around very new fry and very new shrimp, they may be swept up in current
4) Placing floaters outside in direct sunlight may also kill duckweed. Duckweed doesn't like that much light, winter or summer (zone 8a) - the lights are on a long time in my grow tent and that may contribute to growth stunting
5) Algae can be very risky growing floater in long sun hours, avoid fertilizer when trying to kill duckweed off of floaters, or the algae will push both floaters and duckweed out of the water during a bloom (particularly my slow growing purple root floaters)
*UPDATE 2*
1) People kept recommending the eheim skimmer specifically, I tried it, it worked much better than other surface skimmers. I would say this would be my final answer to duckweed. It can suck up fry and shrimp but there's ways one may deal with that. It's a two day process instead of a 2 month process. A "lose the duckweed part 2" video is coming soon.