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If you have a proper filtration system, adequate aeration, and healthy plant material, you shouldn’t need a UV filter. You should generally be able to keep your pond water clear without added equipment (ie UVs, Iongens, Dosing Systems, Chemicals). That said, some ponds thrive using UV filtration.
A UV filter can help in clearing green water. Small single-celled algae will pass through the media in your biological filter. However, when this single-celled algae passes through a UV, these cells can become damaged allowing them to clump together forming a larger mass. This can then be filtered out in your bio filter.
An issue I have with UV filters is that they require a specific flow rate (gph) to function properly. Most homeowners don’t realize this. You can’t install an inline UV onto your existing piping with a 3,000+ gph pump; it won’t be effective. Most UV's have a maximum flow rate under 2,000 gph. Therefore, to account for this, you have to throttle down your pump, manifold off the UV, or run the UV off a separate pump. I suggest the latter as it makes removing the UV the easiest before winter.
I might be a naturalist, but I’m a firm believer in biological filtration, excessive plants, and water changes. I’ve never been big on UV filters. I’m not saying UVs don’t work, I think they are an extra cost, another thing to hide, and require more yearly maintenance. That said, some ponds need a UV.
Join the ConversationYou don’t need a UV if you have good filtration
Austin Foose | | Report
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