http://www.filterpro.co.uk An introduction to chemical filtration used to solve common aquarium problems. *(Time stamps below)* Remember to use the chemical filtration in your filter last. That way the Biological side of the filtration (bacteria) has access to whatever is flowing through the system (ammonia, nitrite and nitrate) to feed it. If the 'food' supply being generated in the tank is cut off the bacteria will still be present but bacteria numbers will be severely reduced. Therefore using a conditioner or liquid which locks up ammonia, nitrite or nitrate is not recommended since that affects the availability of food / nutrients all through the system and can delay the biological cycle severely by maintaining an artificially low population of bacteria in the whole system, including in the substrate which can hold an appreciable amount of bacteria under normal conditions......when using conditioners with binding agents which affect ammonia, nitrite and nitrate most people get tricked into using additives and bacteria to try and restore some sort of stability to the system so are coerced into buying more 'treatments' than they need. It is a very pharmaceutical template for business - selling more treatment to mask the side-effects (known affects) of the initial damaging 'treatment'. That's something I am 100% against since it is a very deceptive way of doing business .........cough....cough....P.f.i.z.e.r.... By using specific chemical treatments in the correct place you can solve specific problems - please try to avoid taking the nuclear option to chemical filtration and fish treatment - identify the problem and treat for that specific problem. I may cover fish treatments in a future video since they were not mentioned here. *TIME STAMPS* 00:00 Intro 00:43 Bottom up filter (where to use chemical filtration in the system) 01:55 Top down filter (where to use chemical filtration in the system) Yes, the coarse and medium pads are upside down in the filter - they should have bumpy side pointing up in top down filter. 02:35 Booster filter (2 methods of set up and where to use chemical filtration in the system) 05:04 Why use chemical filtration LAST 07:38 The only 'chemical' you regularly need (when using tap water for water changes) 08:10 Recommended temporary chemical filtration and when to use it 10:28 Conditioners and what to avoid 12:17 The pharmaceutical business model 13:06 Why to treat specific problems 14:21 Bacteria and why I recommend the gel balls My email is sales@filterpro.co.uk and my phone number is 07772848730 I get so many emails that some end up in the spam folder or are deleted accidentally when I'm cleaning them up every morning - phone is best. ... https://www.youtube.com/watch?v=momoQwzSmp0