***** Play It Koi is rated 4.9 out of 5 stars, based on 1603 reviews!

Evolution Aqua K1 MicroBead Filters

2 reviews K1MBF2400

Evolution Aqua

Sale price $1,169.99 Regular price $1,299.99


K1 MicroBead filtration systems are a range of pressurized filtration systems that deliver incredible levels of filtration for ponds. By using the new K1 Micro filter media instead of conventional beads, these filters offer better biological and mechanical filtration. This is due to the vast protected surface area of the K1 Micro filter media (950m2 per m3).

This protected surface area safely houses friendly filter bacteria and prevents them from being flushed to waste during the cleaning cycle. Only dead bacteria, waste debris will be discharged. This results in no Ammonia and Nitrite spikes after maintenance.

The K1 MicroBead filter has been designed to allow an unrestricted flow of water through the unit meaning a lower wattage pump can be used saving you money. That said, in our own testing, we found the following flow rates to offer the best performance in terms of clear water.

Play It Koi recommended pump size for Evolution Aqua MicroBead Filters:

  • K1MicroBead 15 - 1500 gph-2400gph
  • K1MicroBead 18 - 2400 gph-3600gph
  • K1MicroBead 20 - 3600 gph-4800gph
  • K1MicroBead 24 - 4800 gph-6000gph
  • K1MicroBead 30 - 5000 gph-6500gph
  • K1MicroBead 36 - 5500 gph-7000gph

Evolution Aqua does not list a flow rate for the K1 MicroBead Filters. The media will work with a wide range of flow rates. Using the lower end to middle of the flow rates below are suggested vs the higher end of the flow rates. The reason for this is because the media works using settlement rather than trapping for mechanical filtration. This is better because it eliminates channeling and is better for biological filtration.


  • Uses K1 Micro filter media for dramatically improved biological filtration compared to using beads
  • Multi-port valve and blower included with all models
  • Blower used during the cleaning cycle
  • Large clear viewing lid on top of the filter
  • Improved flow-through K1 Micro filter media
  • 6 sizes of filter systems available, 15", 18", 20", 24", 30" and 36"

K1 Micro Bead Internal view

All in all, the K1 Micro Bead filters offer unsurpassed mechanical filtration, tremendous biological performance, all in one which saves you money and can be installed on any type of installation.

Evolution Aqua have re-designed the K1 Micro Bead filters for 2017 to offer new and improved performance.

These game-changing filtration systems completely re-invent the way we think about bead filters. Rather than using conventional beads as their principle filter media, our filters use K1 Microbeads

K1 Micro offers a whole range of benefits over beads including:

  • Improved biological filtration
  • Better mechanical filtration
  • Improved flow
  • Reduced back pressure on pumps
  • Increased protected surface area
  • Improved internal design
  • Re-designed internal pipework

K1 Micro Bead Filter Sizes: 6 sizes of filter systems available, 15", 18", 20", 24", 30" and 36"

Evolution Aqua Microbead Specs
  • K1 Micro Bead Filter 20: 20” Diameter. For ponds up to 18,000 litres/ 4,000 Gallons
  • K1 Micro Bead Filter 24: 24” Diameter. For ponds up to 36,000 litres/ 8,000 Gallons
  • K1 Micro Bead Filter 30: 30” Diameter. For ponds up to 54,500 litres/12,000 Gallons
  • K1 Micro Bead Filter 36: 36” Diameter. For ponds up to 91,000 litres/20,000 Gallons

K1 Micro Bead Dimensions

Utilizes K1 Micro media. Simply the best! K1 media has been used by Evolution Aqua in Koi filtration systems for a number of years. This new type of filter media, K1 Micro, contains all of the benefits of traditional K1 media but is extruded in a much smaller form. The small wheel shaped filter media pieces provide a significantly increased protected surface area per cubic meter when compared to standard K1 for bacteria to colonize. This makes K1 Micro an ideal filter media for Koi ponds and of all types of ponds where high-level biological filtration is needed.

K1 Micro Media

View K1 MicroBead filter Instruction Manual (PDF)

Customer Reviews
5.0 Based on 2 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • system
  • everyone
  • setup
  • savio
  • media cleaning
  • debris basket
Gary H.
United States United States
MicroBead Filter 24"

I'm so looking forward to having a system to clean just once a week compared to my Savio filter setup which is daily debris basket and filter media cleaning (twice in the summer). I'll let everyone know how the setup goes and most importantly HOW IT WORKS!!!!!

Jason S.
United States United States
It's like Magic!

I got it installed and it was like Magic! The bond is crystal clear now. I've attached a couple photos too. Thank you for your help. I now have piece of mind that the fish will be ok and the pond is healthy.

Play It Koi Evolution Aqua K1 MicroBead Filters Review

Liquid error: Could not find asset snippets/swymSnippet.liquid