How Can I Get Rid of Green Water

  • We are currently upgrading MFK. thanks! -neo
UV, UV, UV, UV, and some salt thats the key. The Salt has a high complexing ability and reduces the toxicity of copper to Koi. So higher salt levels are beneficial. Rock salt @ 1 pound per 100 gallons can kill stringy algae and aquatic plants. Remove excess algae or aquatic plants before dosing with this level of salt. The decaying vegetation will pollute the pond and reduce oxygen levels. Be careful when adding salt to your pond.

Ultraviolet systems will effectively kill planktonic algae with the proper size unit for your pond. These units are quickly becoming a standard item in conjunction with an adequate filter system. An ultra violet system will speed the balance of the pond significantly.

My pond is 4 ft deep and as you can see you can see right down no problem you can see the water was clear with just the UV put the salt in and all gone;)

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Stotty, He doesn't have any koi, just a bunch of guppies. And his pond is very shallow. That much salt would wipe out his plants, guppies, any biologicals that he's trying to grow in the filter, and chase the frog away too.

Fishyz, Hold off on the salt till you see if the algaecide works out. Only way to remove the salt is to do a 100% water change, smaller w/c's would only prolong the task.

Salt does have its place tho, helps prevent some algae (or atleast slow it down), ick, promotes slime coat and a healthier fish in general. But you don't have fish right now (so to speak) so we'll worry about it later.

Hey Fishyz, whats your water like? Soft / hard / lots of iron / well / chlorine or chloramine treated. And yes I know it's WET so don't go there! :D
 
Dr Joe;491967; said:
Stotty, He doesn't have any koi, just a bunch of guppies. And his pond is very shallow. That much salt would wipe out his plants, guppies, any biologicals that he's trying to grow in the filter, and chase the frog away too.

Fishyz, Hold off on the salt till you see if the algaecide works out. Only way to remove the salt is to do a 100% water change, smaller w/c's would only prolong the task.

Salt does have its place tho, helps prevent some algae (or atleast slow it down), ick, promotes slime coat and a healthier fish in general. But you don't have fish right now (so to speak) so we'll worry about it later.

Hey Fishyz, whats your water like? Soft / hard / lots of iron / well / chlorine or chloramine treated. And yes I know it's WET so don't go there! :D
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Yes I have to admit the salt is not too good for the plants but as you can see really works well on that Blanket weed. My pond has been gin clear since having the UV just could not get rid of the blanket but as you can see from the pictures works really well. I would try Dr Joes advice you are in good hands but if you still having trouble come back to us and try some salt Guppies love it but the plants might not in to higher concentration.
 
I used a uv coupled with reduced feedings and limited sunlight. Shade the pond and a few water changes will reduce available nutrients.
 
Yea!

You mean you didn't add an algaecide?

If you did, watch where you drain the old water, some grasses maybe sensitive to it.

It's a start...You can do a larger water change if you want. Up to 50% not problem.

Yea! Clearer water. Good work. Hope you don't get alot of sun and have an algae bloom...

Dr Joe

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I don't know if this has been said yet, but, IME a better, cheaper, and waaaaay fater method (than a uv) is a Diatom filter. in an experiment i did, i installed a uv on one of my tanks, for an hour, hardly any difference, if any. after that, i put my diatom on and in less than 2 minutes, the water was crystal clear----- put the uv to shame!!!! anybody else have some input. btw Vortex makes the diatom filter that i have. matter of fact, i wont bother with a uv again, except for disease.
J
 
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