Combining filters


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I have a large pond with fish - 40,000 litres. I want to ask what would be the best way to connect 2 pressurised filter/UV units to my pump. In parallel? - where the output from the pump is split with a "Y" connector to each filter and another "Y" to bring the output from the filters back to one pipe which then goes to a waterfall at the other end of the pond. Or in series - where the output from one filter goes to the input of the next filter and then to the waterfall. Would parallel be better as it would split the pressure from the pump to each filter allowing the filter and UV light more time to work? Any thoughts would be greatly appreciated. Thank you.
 
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I'd do parallel if it were me - that way one filter can still be running while you clean the other. Or if something happens to one, you still have the other. I wouldn't even worry about the UV - that's only useful for floating algae which is generally a short term issue until a pond gets balanced anyway.

Just one opinion! Which pressurized filters do you have?
 

mrsclem

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I agree with the parallel set up. Just make sure that the GPH on the pump does not exceed the filters maximum flow.
 
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I'd do parallel if it were me - that way one filter can still be running while you clean the other. Or if something happens to one, you still have the other. I wouldn't even worry about the UV - that's only useful for floating algae which is generally a short term issue until a pond gets balanced anyway.

Just one opinion! Which pressurized filters do you have?
 
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had one on the pool Pools are sterile and have chlorine to help them out . no good for nature
 
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Pressure filters were designed for pools with chlorine. They are too tight to allow mother nature room to grow. There are mechanicals filters that work . Pressure filters are my least favorite.
 
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As usual, I'm in the other camp here. I have a large pressure filter and am very pleased with it. It does a great job on my overstocked pond, always keeping the water parameters in great shape. And it's easy to clean. I don't see a downside with mine.

I also have a shower filter at the top of the waterfall. But it probably isn't even needed since water coming from the pressure filter tests zero for ammonia and nitrite. But it's there if it is ever needed.

Everyone has their own preferences and requirements. Whatever works for each person and their pond is fine.

I'm very pleased with my set up as it is. If I weren't, I would have something else, but I see no need to change mine.
 
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Thats where i would lean toward a pressure to take up the slack. Showers are fantastic for bio load. But they do next to nothing for micron floating matter in the pond. Showers pour water through the air oxygenating and allowing bacteria to explode. And the pressure filter is the exact opposite. O2 has a hard time working through the sand or similar but does a great job stripping organics and particles out of the water.
 
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No sand in the filter, only k1 media .

I've never bought into the argument that there is a lack of oxygen in a pressure filter. It has a continuous flow of fully oxygenated water from the pond going through it. Does all that O2 magically disappear the minute that water enters the filter? That doesn't add up in my mind. But then, what do I know.
 
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With k1 there is no fight because your running more two biological filters . Pressure filters generally are more mechanical filters but not with k1
 
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