Roundup Custom 53.8% Glyphosate for Aquatic & Terrestrial Use 2.5 gallons

First note the name has changyro Aqua Master. I almost returned the bottle because I ordered RoundUp Custom, but the bottle that showed up is Aqua Master. Bayer has changed the name. It's the same product with the same EPA Registration number (which means it comes from the same spigot at the factory). It works well. You do need to add a surfactant and there are not a lot of those labeled for aquatic use. We've been using Alligare 90 with good results.

Works great as usual. I usually use 2 oz of roundup concentrate to 1 gallon of water along with 1 ounce of surfactant. The surfactant allows the roundup to penetrate the leaves better.

Good controlling cattails and water lilies in ponds as long as you add a surfactant.

I've been using the Aquatic Roundup around my pond for years. It kills the vegetation commonly found around ponds. It does take a few days for the weeds to turn brown. It only kills what's currently growing, it is not a pre-emergent. I've never lost a fish due to using it.

I have a serious New England knotweed problem, i used this mixed with a surfactant. Applied with a backpack mister and it decimated my knotweed, will probably need to keep applying every couple of months. But it's doing a great job. Star off because of how seriously toxic this product is, it's full on Chernobyl nuclear. Use horticulture vinegar/dawn/salt on normal weed issues. Wear rubber gloves and a real 3m organic vapors respirator if you value your lifespan.