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Decent set of 4 plastic boxes: http://geni.us/iGvq
Stronger option for larger filters: http://geni.us/tBdZg
Biohome and Pumice: http://www.filterpro.co.uk'>http://www.filterpro.co.uk
The shower filter set up on outdoor aquarium:    • Outdoor Aquarium Update May 2016  
'How To' video showing the building of a very effective and extremely cheap shower filter for a fish pond.
The media types in this video are as follows:
Flocor = a very cheap and quite ineffective plastic media in any situation. Supports aerobic bacteria.
Large Helx = a quite effective plastic media for a shower filter but more suitable for a large moving bed filter. Supports aerobic bacteria.
Helx 13 = decent media for a shower filter but like other plastic media it only really supports aerobic bacteria. Good alternative to K1 in a moving bed filter as it has 40% more surface area per volume.
Gravel = it is definitely not the best natural media but is better than plastic. Supports mainly aerobic bacteria as it tends to be not very porous.
Alfagrog = A decent cheap ceramic media which does quite well in a shower filter. Good surface area but poor porosity so it takes ages to build up anaerobic bacteria. However it will support both aerobic and anaerobic bacteria when well established which could take a year or so to affect nitrates.
Pumice = a great natural filter media if the correct type is selected. The pumice I used in this video came from a supplier specialising in pumice for drinking water purification so it has an excellent reliable internal structure. Will support a decent balance of aerobic and anaerobic bacteria for nitrate reduction.
Biohome Ultra = A sintered glass filter media which was created for use in shower filters and large aquarium sumps. Effective in fresh or salt water and its internal structure is perfect for supporting aerobic and anaerobic bacteria in great balance so is the best choice if the aim of the filter is full cycle filtration (nitrate reduction).
I sell some of the media types above on my website here: http://www.filterpro.co.uk'>http://www.filterpro.co.uk

FILMING EQUIPMENT:
Panasonic HCVX870 http://geni.us/3UwE
Rode stereo microphone: http://geni.us/4OL
Rode deadcat mic cover: http://geni.us/1pmn

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Check out the nation of other aquatic videos on my channel.
Thanks for watching.
Pondguru.