Pond Boss Forums AQUATIC VEGETATION Identifying plants Bright green "slime" colored substance on surface?

All, I trap water meal and duckweed oN my half acre pond behind a homemade boom at the pointy end of it's triangle shape where wind blows it. Had some spirogyra but nailed it with cutrine plus about a month Ago (weedplex for water meal and duckweed, cutrine plus for the FA). I noticed today a plume of bright green on surface. When I tried to scoop some out with pool skimmer, the stuff went right thru the skimmer pores. It left no oil or paint residue. Do you think a planktonic algae bloom can rise to the surface? The plume is small at the moment. About ten feet by two feet. More clues...we recently had rain and temp drop from high 90's to mid 80's.

That's what I'd say. I see that in a local lake about a week before the water clarity turns from 40" or so to about 18" in the late Spring.

The color is just like the color of Slime that you fix flat tires with. Almost a fluorescent green. I will try to filter some out with a white paper to take a closer look. By the way, I tried Sonar last summer but after $1000 spent, no noticeable results. Is Clipper
effective alternative for watermeal?

Is there a way for you to test your pH?

I will pick up some strips. However, as your instinct may have suggested, the green slime was a sign of bad things to come. Rain, clouds, extreme temp drop led to a fish kill starting on august 10. I will start bagging carcasses soon and keep a tally. I called biologist over at a local fish supplier and he said I was third caller of the morning with fish kills. He said likely culprit is massive die off of planktonic algae with resulting oxygen depletion. Water did go from green to brown. I will keep surf aerator on 24 hours a day as he suggested. Thanks for the help.

If that happens again (the green algae showing up) you can treat with Phycomycin. It is used by fish farmers to treat blue-green algae. When it breaks down it creates O2. It isn't near as effective on algae mats, or FA. It needs volumes of water to work. You have to spread it out in powdered form, it can't be tank mixed.

The reason I was asking about pH is that Clipper isn't near as effective in higher pH water as it is in water that is around 7.0.

Thanks, Esshup. Bad news on the resulting fish kill from the plankton crash.
Tally so far: 15 channel cats, 33 LMB, 4 bluegill
One of the cats was 38inches long and 8 inches wide...solves the riddle of what was busting my fishing lines. I will be sure about pH before trying any clipper.

One can use Phycomycin (Green Clean, Pak 27) as a surface spray. Dissolve 1 cup per gallon of water. Spray on the surface. I've used the granular this way for spraying surface films, scums, and mats.

Jeez o pete! That's a huge CC!

Bill, how long does it stay active in the tank? (how much time do you have to spray it out?) The way that it boils up when I've used it, I'd be worried that the tank would go kaboom.

I heard Clipper works better with F-30 Algae Control vs other algaecides.

CLIPPER is an excellent algaecide in its own right. The current CLIPPER specimen label makes no reference to or recommendation for algaecide tank-mixes. I'm curious of the details and the source who reported benefits (much less a comparative advantage) of using copper algaecides of any brand in conjunction with CLIPPER.
I "hear" lots of things - mostly propaganda - unless substantiated by credible sources or supportive field-data.