Hi armyret…
I was having a terrible time with Hydrilla… /forums/images/graemlins/mad.gif That is a particularly nasty aquatic vine weed that you CAN NOT control using chemical… The cabled system removed tons of the stuff… I was using around 1400 yards of cable, actually ¾” wire rope. I had another use for the cable… I also had to use snatch blocks on one side.
After one season of harvesting this weed, high protein by the way… I found out that mechanical removal was tried in Florida… Then they discovered, as I did, that at each point you brake/cut the stuff, it will sprout two new sprigs… thus doubling your problem… I did ultimately find a solution but for this weed, mechanical is not it…
If you have moss. mechanical will work sort of… but moss is so easy to control using a very mild chemical application. DuPont makes a herbicide called Karmex. It is used to keep irrigation ditches free of most aquatic weeds. Karmex is available as a wetable powder or granular. I used the powder… You will never have moss if you use this in late spring… I mixed 3 pound with 10 gallons water and applied this with a hand sprayer on the surface using a small boat, applying about 1 pound per surface acre, My water averaged around 14 foot deep over 10 acres. Youl' use around 1 pound total. Do Not Treat More Than 1/4 of your pond at a time. Treating each remaining quarter at least 1 week apart. Decaying vegetation will deplete oxygen and kill/harm any fish in your water. Follow the directions on the package, you can greatly reduce the recommended application rate, and you will have no moss. KennyV.