Any calculations on how long it would take a 2" trash pump to circulate one acre foot of water?.
32.6 hours to move 1 acre of water, 1 foot deep. 326,000 gallons and 2 inch trash pump pumps 10,000 gallons per hour. But realistically it would be much less, because you’re only skimming the surface of the acre.
They make bigger dewatering bags, that is what is used when demucking a pond. I have no idea how to clean them out, I've seen them left in place for 6 months to a year, then cut apart and heavy equipment used to move the dried muck.
Just do a google search for dewatering bags. That was the first place that popped up that wasn't an ad.
That was a good thought to use one to remove the algae in the pond. You might have to up the water flow to a 4" pump. You will have a LOT of water to move and circulate. I've dewatered ponds to lower the water volume when killing a pond, or getting it ready to renovate. I think for removing algae, it might be more beneficial to have the pump as far away from the dewatering bag as possible, so you aren't sucking up the cleaned water.
Just a cheap and easy option, but I've used construction site erosion fencing several times, and it's worked extremely well. I just run the pump outlet hose 20-30' from the bank on a gentle slope, and I've had nothing but clean water re-enter the pond. The algae and chopped up coontail never made it past the fencing. Portable and cheap.
Scott do you have any pics of how you did the remote tank?
No but I can describe it easily. I took an older outboard motor gas tank that was metal. Flushed it out really well to get any traces of gasoline out of it and then let it sit for a week open inside a building so it would dry and any gas residue would be gone. Drilled a small hole near the bottom on the one vertical side, soldered a 1/4" pipe fitting to the tank, then a shutoff valve, then a barbed fitting that was the same size as the fuel line. Drained the fuel from the onboard pump tank. Disconnected the fuel line from the onboard tank at the carb, set the outboard motor tank on an upside down bucket so the tank bottom was the same height as the bottom of the "on board" tank. Ran new fuel line from the aux tank to the carb and everything worked fine.
I tried using a new plastic outboard tank that has the pickup from the top of the tank but there must have been a teeny, tiny air leak somewhere because it would run fine for an hour or two, but it wouldn't run all night, so I surmised that the pump motor sipped gas so slowly that it couldn't overcome the air leak and it built up enough to break the siphon.
Oh sorry, forgot to add that the actual floating skimmer piece is an Admiral B38 floating weir skimmer, and the black piece on top of the bucket (that holds the skimmer in the center) is a 6" Hydroponics mesh bucket lid with the mesh cut off. You might be able to ust a regular bucket lid but i wanted something more firm.
A 5 gallon bucket with a 2" bulkhead on the bottom of the bucket. this is connected to 2" PVC ending in a CamLock, which connects to the input hose going to the 2" trash pump.
On the output size of the trash pump, another CamLock (for easy connect/disconnect) going to 2" PVC in an upside down U, discharging into a 55 gallon drum.
I now have a cloth sack cylinder (home made with flour sack scraps sewn together) lining the 55 gallon drum to filter the duckweed and watermeal from the water. Several holes go around the sides of the barrel at the bottom to allow the water to filter/drain out. Chicken wire around the barrel keeps the filter cloth cylinder from pushing out of the barrel.
