New at ponds. Why is my water green?

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B

Briwike

Feeder Fish
MFK Member
Dec 7, 2009
35
0
0
Missouri City, Tx
So as I state I am new to pond keeping. My 350gallon horse trough I set up in the back yard has major green water. I have it in the corner of my yard a 1/4 under a small Texas sage tree. It only gets maybe 4-6 hours of sun light. I have a 720 gph pump hooked up to a pressure canister filter rated for 500gallons. I have tested water .25 ammonium and 0-10 nitrates. I have water Lillie's hardy and tropic in pots with fertilizer 6 total all growing well and some amazon swords and Anubis. I have tried to use bog plants grass and others in a pond basket submerged half way in the water. I go a water change 25-50% every other week. And the water is getting greener and greener. I want to throw some grow out istlanum, bifasciatus, fenestratum, and festea seeing I live in Texas where water temp is great for the summer. Right now cycling with 9 white clouds and 5 buenos Aries tetras. How can I decrease the green. More filtration more bog plants or cover pond with a mesh? Please help any one.


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A UV sterilizer should do the trick. i dont know much about ponds but i know in indoor aquariums, that does the trick every time.
 
Agreed. I've read posts where a UV cleared up the algae almost visibly within hours. I would give that a shot before trying anything more elaborate.
 
My pond is dormant (pump is shut down with no fish, because it freezes solid) late Nov thru April, and gets an algal bloom every spring until I get my fractionator back into service. Fractionation removes everything from single cell algae, to algal precursors in the waste foam which falls on the ground. It also provides biological filtration with the lava rock which is used to create agitation of the air water interface.
Mine came from a DIY thread on koiphen.com, building a phoam phractionator.
click to start video
 
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