APS HOB500 (Amazon): https://geni.us/Q4AI37t
APS HOB500 (Ebay): https://ebay.to/2DZfrnz
Smaller version (Ebay): https://ebay.to/2SEvMG1
Foam for intake (Amazon): https://geni.us/EY86zGk
US Equivalent Filter Model 803 (Ebay.com): https://ebay.to/2MQnPZ4
US SunSun version HL803 (Ebay.com): https://ebay.to/2MUr0z1

Foams and Biogravel: http://www.filterpro.co.uk
(FilterPro site has links to suppliers in other countries)

This is a damn fine filter for the price and for once it appears that it is currently cheapest in the UK which is a miracle...
It would make an excellent back up filter for a larger tank or a great single filter for a small to medium sized tank.
As it holds approx. 1.2kg (2.6 lbs) of biogravel it is suited to a normally stocked community tank of around 120 litres (32 US gallons) or a heavily stocked tank of around 60 litres (16 US gallons) if you want to achieve a full cycle.

WHAT IS A FULL CYCLE?
A full cycle is completed by bacteria the aerobic part of biological filtration which processes ammonia to nitrite and nitrite to nitrate followed by an anaerobic part which processes nitrate into soluble nitrogen which bubbles off to the atmosphere.
Therefore it requires a suitable amount of excellent quality filter media to be able to provide the environment for both aerobic AND anaerobic bacteria that is what the various forms of Biohome does perfectly but even with such good media there are limitations and we recommend the following amounts for different stocking scenarios:
(1 US gallon = 3.8 litres)
(1kg = 2.2 lbs)
Average community tropical aquarium = 1kg per 100 litres
Average coldwater aquarium = 1kg 1.5kg per 100 litres
Predator aquarium = 1.5kg 2kg per 100 litres
Large cichlid aquarium = 1.5kg 2kg per 100 litres
Malawi / Tanganyikan aquarium = 1.5kg 2kg per 100 litres
Marine aquarium = 1.5kg 2kg per 100 litres
Average mixed fish pond = 1kg per 200 litres
Average koi pond = 1kg per 150 litres

You may be disagreeing with the above figures but remember that they are for a FULL CYCLE not half a job achieving 0 ammonia and 0 nitrite is quite easy since aerobic bacteria grows freely on any surface but the anaerobic bacteria responsible for COMPLETING the cycle needs more a specialized habitat.
Size a filter properly, set it up sensibly and you will have perfect water it's that simple....and your filter won't be the dreaded 'Nitrate factory'.

This series of videos is all about trying to squeeze more efficiency out of internal and external aquarium filters which generally have a limited filtering capacity If you have a filter you'd like me to feature in a video then please contact me on:
[email protected]
07772848730 (Richard)

Anyone who sends a filter (UK only at present) will have it upgraded and returned to them for free and the only cost you will pay is how much it costs to ship it to me I'm helping to boost your filter and the resulting videos will hopefully be useful to viewers all over the world so it's a win/win.

The following videos will be useful to anyone interested in learning more about filtration, bacteria and making the conditions for your fish as good as possible:
Sizing a canister properly and filter set up: https://goo.gl/om19un
Looking INSIDE different filter media: https://goo.gl/hZWS6c
Bacteria and filter media: https://goo.gl/123gAF
How to clean an aquarium: https://goo.gl/bPMhvh
Aquarium tips / filtration playlist: https://goo.gl/pXgqVj

This channel is purely a hobby for me so I will never ask viewers to donate money for any of my projects or charge anyone for information information should be shared freely and I certainly don't consider myself an 'expert' in anything I pursue as a hobby so please do your own research, never accept anything as 'fact', reject anyone claiming to be some sort of authority or 'expert' and make your own minds up about anything you wish to study.

We all are on a long path of learning.........

RECOMMENDED PRODUCTS ON AMAZON: https://goo.gl/jMaBWy
INSTAGRAM:   / pondguru_ou.  .

FILMING EQUIPMENT:
Panasonic HCVX870 HD camcorder http://geni.us/3UwE
+Rode stereo microphone: http://geni.us/4OL
+Rode 'deadcat' mic cover: http://geni.us/1pmn
JVC Everio quad proof HD camcorder: http://geni.us/e09e
+Rode 'deadcat' mic cover (opened up and held between tripod and camera base) http://geni.us/dee24
Zomei Z666 tripod: http://geni.us/1a1af3
Manfrotto MTPIXIB PIXI mini tripod: http://geni.us/87f7

If you've enjoyed this video please check out the playlists on my channel for hundreds more on a variety of subjects.
Feel free to share or link any of my videos on facebook, twitter, forums etc. for the benefit of anyone you think may also enjoy watching.
See you next time.
Pondguru