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algae
#516822 02/14/20 01:24 PM
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I have a 1/3 acre pond stocked with bass and bluegill. Every year I fight pulling algae out with rakes and nets but find that is so time consuming to keep up with. This year I am planning on trying a 3" trash pump to suck it out and run it through some sort of filter or screen to let the water drain back in so I don't end up just emptying my pond in the process. Has anyone tried this method and if so, do you have any pointers or things that have worked for you? Also, I've been reading up on tilapia, but seeing somewhat mixed results on their effectiveness for eating algae.

Re: algae
tractorsteve #516823 02/14/20 01:55 PM
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Welcome tractor man. Got to say ever never had tilapia. Before doing that again (raking) I would give them a try. I believe they have to be restock but not 100% sure on that. The trash pump idea sounds harder than raking if you ask me.Just my thoughts

Last edited by RStringer; 02/14/20 01:57 PM.

The people who say I can't do it can just sit the @^#% down and watch me. Friends call me Rusto I also subscribe to pond boss mag. http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=504716#Post504716
Re: algae
RStringer #516824 02/14/20 02:14 PM
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If you can stock tilapia in your state they are algae eating machines and you can eat them

Re: algae
tractorsteve #516825 02/14/20 03:04 PM
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Originally Posted By: tractorsteve
..This year I am planning on trying a 3" trash pump to suck it out and run it through some sort of filter or screen to let the water drain back in so I don't end up just emptying my pond in the process. Has anyone tried this method and if so, do you have any pointers or things that have worked for you?..

Yes I have.

Starting at the water, use a rigid 6-8' PVC pipe for the inlet, and float it about 8" under the surface with whatever's available. You do this because if the pipe closer to the surface will create a venturi effect, and suck air into the pipe and reduce the pump's efficiency. Floating the inlet will let you either walk the pipe to the algae, or leave it stationary, and rake the algae to the pipe. Both methods work well.

I like using the yellow spiral wired hose between the inlet on the pump, and the PVC inlet. It's more expensive, but it'll save wear and tear on your body. The standard green rigid hose is much stiffer and harder to move around. From the outlet on the pump, I just use 30-40' of hose, and extend it to a gently sloped area that runs off back into the pond. I've used the 2' high erosion fencing like construction sites use to make sure no algae gets back into the pond, but I've yet to have any algae makes it that far. When I've done it, there was only a patch at the end of the outlet. I wait a few days, and just peal it up for the garden. I've only done it with turf, so I'm not sure if bare soil will catch the algae like grass does.

If you're going to be moving around, consider putting the pump on a low trailer or tractor bucket and add a shutoff valve between the rigid PVC, and the rubber inlet hose. This will keep you from having to reprime the pump every time you move it. Just move the pump to the new location, get the inlet hose straighten out in the pond, and press down at the PVC/inlet rubber hose connection. Once that's done, open the shutoff valve and then restart the pump. Doing his will push the air out of the inlet, and the pump will start pulling almost immediately. IIRC, we've applied 30 tons of gypsum in a friend's 3 acre pond using this same method in less than 3-4 hours. Only difference was the inlet and outlet hoses were swapped.

Just random stuff, but all pumps require a certain percentage of water to operate correctly, so let the hose pull clean water between the heavy algae pulls. If algae's a problem right now, I might do it before filamentous algae gets really started. Denser weeds including FA can back up at the flapper valve at the inlet side on the pump housing itself, and require cleaning. It's a PITA if this happens, but it shouldn't with just algae. FYI, coontail's the worst about this.

Tilapia stocking numbers can be lower if you are able to remove algae now. By summer, it can take double or triple the amount of tilapia to control an aggressive algae problem.

I'll look for pics later if that helps.

Oh, welcome to the forum.


AL
Re: algae
FireIsHot #516827 02/14/20 03:15 PM
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Thank you for your detailed response. With your experience with the pump, have you had problems when its leaves and muck of decomposing leaves that you are sucking with the algae? Have you heard of problems with tilapia? i read somewhere that they only end up taking care of maybe 10% of the algae and can hurt bluegill populations by chasing them away from their food.

Re: algae
tractorsteve #516829 02/14/20 04:42 PM
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Originally Posted By: tractorsteve
Thank you for your detailed response. With your experience with the pump, have you had problems when its leaves and muck of decomposing leaves that you are sucking with the algae? Have you heard of problems with tilapia? i read somewhere that they only end up taking care of maybe 10% of the algae and can hurt bluegill populations by chasing them away from their food.


I've used tilapia and find that they do a good job on algae. At least, I've never had algae problems at all. They won't do much against excess pondweeds, though.

Tilapia do eat fish pellets, but mine seem less aggressive at the feeder than BG, LMB, and hybrid stripers. Maybe if you had huge numbers of starving tilapia it would be different, but they really don't seem to crowd out other fish when the dinner bell rings.

Bob Lusk has stated that tilapia correlate with increased young of year BG survival, possibly because the BG eat some small tilapia instead of YOY BG. Certainly my CNBG have done very well alongside tilapia.


Last edited by anthropic; 02/14/20 05:57 PM.

8ac, full 3/16. CNBG, RES, FHM 10/15; TP 5/16; FLMB 6/16. 100 12" NLMB & 1k GSH 10/17. 150# TP & 70 HSB 5/18. 1k PK 11/18. 100# TP 4/19, 200# RBT 12/19, 10k TFS 3/20, 100#TP 5/20, 139




Re: algae
tractorsteve #516833 02/14/20 07:14 PM
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tractorsteve, my tilapia experiences are very similar to anthropic's. We get very few tilapia at the feeders, but I know others do.

The trash pump should handle leaves, etc. just fine. It's the plants with long fibrous stalks that give them trouble.


AL

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